Home / 87,385.38-131,050.53-28,206.78

Finding the Fourth Proportional to 87,385.38, 131,050.53 and 28,206.78

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Solution

The fourth proportional to 87,385.38, 131,050.53 and 28,206.78 is: 42,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,385.38 : 131,050.53 = 28,206.78 : x
  2. Step 2: Convert to fraction form
    87,385.38/131,050.53 = 28,206.78/x
  3. Step 3: Cross multiply
    87,385.38x = 131,050.53 × 28,206.78
  4. Step 4: Simplify right side
    87,385.38x = 3,696,513,468.59
  5. Step 5: Solve for x
    x = 3,696,513,468.59/87,385.38
  6. Step 6: Final answer
    x = 42,301.28

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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.