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Finding the Fourth Proportional to 66,419.52, 99,650.82 and 39,761.36

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Solution

The fourth proportional to 66,419.52, 99,650.82 and 39,761.36 is: 59,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,419.52 : 99,650.82 = 39,761.36 : x
  2. Step 2: Convert to fraction form
    66,419.52/99,650.82 = 39,761.36/x
  3. Step 3: Cross multiply
    66,419.52x = 99,650.82 × 39,761.36
  4. Step 4: Simplify right side
    66,419.52x = 3,962,252,128.32
  5. Step 5: Solve for x
    x = 3,962,252,128.32/66,419.52
  6. Step 6: Final answer
    x = 59,654.93

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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.