Home / 81,315.51-121,972.50-63,561.12

Finding the Fourth Proportional to 81,315.51, 121,972.50 and 63,561.12

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Solution

The fourth proportional to 81,315.51, 121,972.50 and 63,561.12 is: 95,341.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,315.51 : 121,972.50 = 63,561.12 : x
  2. Step 2: Convert to fraction form
    81,315.51/121,972.50 = 63,561.12/x
  3. Step 3: Cross multiply
    81,315.51x = 121,972.50 × 63,561.12
  4. Step 4: Simplify right side
    81,315.51x = 7,752,708,709.20
  5. Step 5: Solve for x
    x = 7,752,708,709.20/81,315.51
  6. Step 6: Final answer
    x = 95,341.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.