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Finding the Fourth Proportional to 66,321.64, 99,517.02 and 29,377

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Solution

The fourth proportional to 66,321.64, 99,517.02 and 29,377 is: 44,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,321.64 : 99,517.02 = 29,377 : x
  2. Step 2: Convert to fraction form
    66,321.64/99,517.02 = 29,377/x
  3. Step 3: Cross multiply
    66,321.64x = 99,517.02 × 29,377
  4. Step 4: Simplify right side
    66,321.64x = 2,923,511,496.54
  5. Step 5: Solve for x
    x = 2,923,511,496.54/66,321.64
  6. Step 6: Final answer
    x = 44,080.81

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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.