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Finding the Fourth Proportional to 66,704.68, 100,042.14 and 19,951.48

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Solution

The fourth proportional to 66,704.68, 100,042.14 and 19,951.48 is: 29,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,704.68 : 100,042.14 = 19,951.48 : x
  2. Step 2: Convert to fraction form
    66,704.68/100,042.14 = 19,951.48/x
  3. Step 3: Cross multiply
    66,704.68x = 100,042.14 × 19,951.48
  4. Step 4: Simplify right side
    66,704.68x = 1,995,988,755.37
  5. Step 5: Solve for x
    x = 1,995,988,755.37/66,704.68
  6. Step 6: Final answer
    x = 29,922.77

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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.