Home / 87,711.38-131,565.92-21,151.01

Finding the Fourth Proportional to 87,711.38, 131,565.92 and 21,151.01

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Solution

The fourth proportional to 87,711.38, 131,565.92 and 21,151.01 is: 31,726.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.38 : 131,565.92 = 21,151.01 : x
  2. Step 2: Convert to fraction form
    87,711.38/131,565.92 = 21,151.01/x
  3. Step 3: Cross multiply
    87,711.38x = 131,565.92 × 21,151.01
  4. Step 4: Simplify right side
    87,711.38x = 2,782,752,089.58
  5. Step 5: Solve for x
    x = 2,782,752,089.58/87,711.38
  6. Step 6: Final answer
    x = 31,726.24

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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.