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Finding the Fourth Proportional to 87,101.67, 120,200.22 and 49,375.92

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Solution

The fourth proportional to 87,101.67, 120,200.22 and 49,375.92 is: 68,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,101.67 : 120,200.22 = 49,375.92 : x
  2. Step 2: Convert to fraction form
    87,101.67/120,200.22 = 49,375.92/x
  3. Step 3: Cross multiply
    87,101.67x = 120,200.22 × 49,375.92
  4. Step 4: Simplify right side
    87,101.67x = 5,934,996,446.70
  5. Step 5: Solve for x
    x = 5,934,996,446.70/87,101.67
  6. Step 6: Final answer
    x = 68,138.72

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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.