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Finding the Fourth Proportional to 66,711.30, 100,059.54 and 16,791.42

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Solution

The fourth proportional to 66,711.30, 100,059.54 and 16,791.42 is: 25,185.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,711.30 : 100,059.54 = 16,791.42 : x
  2. Step 2: Convert to fraction form
    66,711.30/100,059.54 = 16,791.42/x
  3. Step 3: Cross multiply
    66,711.30x = 100,059.54 × 16,791.42
  4. Step 4: Simplify right side
    66,711.30x = 1,680,141,761.15
  5. Step 5: Solve for x
    x = 1,680,141,761.15/66,711.30
  6. Step 6: Final answer
    x = 25,185.26

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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.