Home / 87,711.60-131,589-25,388.40

Finding the Fourth Proportional to 87,711.60, 131,589 and 25,388.40

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Solution

The fourth proportional to 87,711.60, 131,589 and 25,388.40 is: 38,088.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.60 : 131,589 = 25,388.40 : x
  2. Step 2: Convert to fraction form
    87,711.60/131,589 = 25,388.40/x
  3. Step 3: Cross multiply
    87,711.60x = 131,589 × 25,388.40
  4. Step 4: Simplify right side
    87,711.60x = 3,340,834,167.60
  5. Step 5: Solve for x
    x = 3,340,834,167.60/87,711.60
  6. Step 6: Final answer
    x = 38,088.85

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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.