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Finding the Fourth Proportional to 65,229.78, 89,996.70 and 36,545.61

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Solution

The fourth proportional to 65,229.78, 89,996.70 and 36,545.61 is: 50,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,229.78 : 89,996.70 = 36,545.61 : x
  2. Step 2: Convert to fraction form
    65,229.78/89,996.70 = 36,545.61/x
  3. Step 3: Cross multiply
    65,229.78x = 89,996.70 × 36,545.61
  4. Step 4: Simplify right side
    65,229.78x = 3,288,984,299.49
  5. Step 5: Solve for x
    x = 3,288,984,299.49/65,229.78
  6. Step 6: Final answer
    x = 50,421.51

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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.