Home / 87,843.28-121,221.50-49,081.42

Finding the Fourth Proportional to 87,843.28, 121,221.50 and 49,081.42

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Solution

The fourth proportional to 87,843.28, 121,221.50 and 49,081.42 is: 67,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843.28 : 121,221.50 = 49,081.42 : x
  2. Step 2: Convert to fraction form
    87,843.28/121,221.50 = 49,081.42/x
  3. Step 3: Cross multiply
    87,843.28x = 121,221.50 × 49,081.42
  4. Step 4: Simplify right side
    87,843.28x = 5,949,723,354.53
  5. Step 5: Solve for x
    x = 5,949,723,354.53/87,843.28
  6. Step 6: Final answer
    x = 67,731.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.