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Finding the Fourth Proportional to 66,502.47, 99,640.94 and 40,151.87

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Solution

The fourth proportional to 66,502.47, 99,640.94 and 40,151.87 is: 60,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,502.47 : 99,640.94 = 40,151.87 : x
  2. Step 2: Convert to fraction form
    66,502.47/99,640.94 = 40,151.87/x
  3. Step 3: Cross multiply
    66,502.47x = 99,640.94 × 40,151.87
  4. Step 4: Simplify right side
    66,502.47x = 4,000,769,370.59
  5. Step 5: Solve for x
    x = 4,000,769,370.59/66,502.47
  6. Step 6: Final answer
    x = 60,159.71

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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.