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Finding the Fourth Proportional to 66,555.87, 99,853.85 and 38,469.52

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Solution

The fourth proportional to 66,555.87, 99,853.85 and 38,469.52 is: 57,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,555.87 : 99,853.85 = 38,469.52 : x
  2. Step 2: Convert to fraction form
    66,555.87/99,853.85 = 38,469.52/x
  3. Step 3: Cross multiply
    66,555.87x = 99,853.85 × 38,469.52
  4. Step 4: Simplify right side
    66,555.87x = 3,841,329,679.65
  5. Step 5: Solve for x
    x = 3,841,329,679.65/66,555.87
  6. Step 6: Final answer
    x = 57,715.87

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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.