Home / 87,665.43-131,498.14-72,884.95

Finding the Fourth Proportional to 87,665.43, 131,498.14 and 72,884.95

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Solution

The fourth proportional to 87,665.43, 131,498.14 and 72,884.95 is: 109,327.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,665.43 : 131,498.14 = 72,884.95 : x
  2. Step 2: Convert to fraction form
    87,665.43/131,498.14 = 72,884.95/x
  3. Step 3: Cross multiply
    87,665.43x = 131,498.14 × 72,884.95
  4. Step 4: Simplify right side
    87,665.43x = 9,584,235,176.78
  5. Step 5: Solve for x
    x = 9,584,235,176.78/87,665.43
  6. Step 6: Final answer
    x = 109,327.43

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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.