Explain Product Market Equilibrium.

To begin with, let us recall our three-sector product-market equilibrium model given as 

C + I + G = C + S + T

To this three-sector model, we now add the foreign trade-the exports (X) and imports (M). with the addition of X and M, the four-sector product-market equilibrium condition is written as 

C + I + G + (X - M) = C + S + T 

The variables X and M need some explanation and quantification exports (X) of a country depend on a variety of factors governing the foreign demand for its goods and services. The inclusion of foreign demand parameters in the domestic model of a country is neither an easy task nor a necessity for a simplified model. Therefore, X is assumed to be a constant factor, that is,

X = X

As regards imports, imports (m) of a country are a function of a number of factors, however, for the sake of analytical simplicity; imports are treated as the function the country's national income(Y). That is import function takes the following form

M = + mY

Where, M is autonomous import and m is marginal propensity to import, the proportion of marginal national income spent on imports.

With and defined, the four- sector product-market equilibrium condition given in can be rewritten as 

C+ I + G + X - M - mY = Y = C + S + T 

The product-market equilibrium condition can also be expressed as 

Y = C + I + G + X - M - mY

Where C = a + by d( where Yd = Y - T = disposable income)

S = - a + (I - B) y (where I - B = mps)

I = I - Hi (where h > 0) 

G = G, (where G is constant)

T =T + t y, (where T is constant tax and t is tax rate <1)

By substituting the equilibrium level of income can be expressed as

Y = a + b [Y - (T + t Y)] + I - hi + G +X - M - my

=a + by - b t - bty + I - hi + G + X - M - my 

Y = 1 / 1-b+ bt + m (a - b T + I - hi + G + X - M

Y = 1 / 1 - b (1 - t) +m (a - b T + I - hi + G + X - m 

Note that the term 1/ (1 - b + bt + m) is tax-trade multiplier which may be redesignated as mu. Also let us designate the sum of the five constants, viz a, i. G, X, and M as A. by substitution these value 

Y = mu (a - b T - hi)

(Where mu is tax-trade multiplier and A = a + I + G + X - M)

Equation  gives the aggregate demand (AD) function in a four-sector model. 

   Related Questions in Macroeconomics

  • Q : Base of categorizing receipts into

    What is the base of categorizing receipts into revenue and capital receipts?

  • Q : Econ question No need apa format no

    No need apa format no need introduction and conclusion Only answer question being ask, thanks

  • Q : Elasticity of brain power When doubling

    When doubling your viewing of soap operas to 16 hrs per week reasons your IQ score to drop/fall from a mastermind level of 140 to a sluggish 70, your TV elasticity of brain power will be: (i) + 1.0. (ii) zero. (iii) – 1.0. (d) +0.5. (e) -0.5.

  • Q : Define fiscal policy Define fiscal

    Define fiscal policy? Answer: Fiscal policy is the revenue and expenditure policy of government with a view to combat the state of inflationary or deflationary gap

  • Q : Where is macroeconomics mainly focus I

    I need a good answer on the topic of Economic problems. Please give me your suggestion for problem which is specified below: Macroeconomics focuses mainly on: (i) inflation, unemployment, economic growth, and other aggregate econom

  • Q : Principles of macroeconomics What are

    What are the “powers of the Federal Reserve

  • Q : Physical quality of life index DISCUSS

    DISCUSS the experience of high GNP countries and low GNP with regard to PQLI.

  • Q : Why government taken as capital receipt

    Why the borrowings by Government are taken as capital receipts?

  • Q : Normative macroeconomic policy

    Widely accepted normative macroeconomic policy objectives include: (w) full employment and economic development. (x) allocative, productive, and distributive efficiency. (y) maximum freedom and economic profits. (z) job security and equality within th

  • Q : Price elasticity of demand for DVD games

    In this figure shown below, the price elasticity of demand for DVD games among prices of $30 and $40 is nearest to: (i) 7/6. (ii) 1/2. (iii) 3/7. (iv) 7/3. (v) 1/3.

    Discover Q & A

    Leading Solution Library
    Avail More Than 1436959 Solved problems, classrooms assignments, textbook's solutions, for quick Downloads
    No hassle, Instant Access
    Start Discovering




    Active Tutors



    Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!

    Submit Assignment

    ©TutorsGlobe All rights reserved 2022-2023.