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Finding the Fourth Proportional to 68,306.87, 102,524.30 and 42,062.87

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Solution

The fourth proportional to 68,306.87, 102,524.30 and 42,062.87 is: 63,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,306.87 : 102,524.30 = 42,062.87 : x
  2. Step 2: Convert to fraction form
    68,306.87/102,524.30 = 42,062.87/x
  3. Step 3: Cross multiply
    68,306.87x = 102,524.30 × 42,062.87
  4. Step 4: Simplify right side
    68,306.87x = 4,312,466,092.43
  5. Step 5: Solve for x
    x = 4,312,466,092.43/68,306.87
  6. Step 6: Final answer
    x = 63,133.71

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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.