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Finding the Fourth Proportional to 65,691.76, 90,654.98 and 35,883.76

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Solution

The fourth proportional to 65,691.76, 90,654.98 and 35,883.76 is: 49,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,691.76 : 90,654.98 = 35,883.76 : x
  2. Step 2: Convert to fraction form
    65,691.76/90,654.98 = 35,883.76/x
  3. Step 3: Cross multiply
    65,691.76x = 90,654.98 × 35,883.76
  4. Step 4: Simplify right side
    65,691.76x = 3,253,041,545.12
  5. Step 5: Solve for x
    x = 3,253,041,545.12/65,691.76
  6. Step 6: Final answer
    x = 49,519.78

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1.5x scale

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.