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Finding the Fourth Proportional to 66,508.62, 91,793.31 and 63,519.18

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Solution

The fourth proportional to 66,508.62, 91,793.31 and 63,519.18 is: 87,667.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508.62 : 91,793.31 = 63,519.18 : x
  2. Step 2: Convert to fraction form
    66,508.62/91,793.31 = 63,519.18/x
  3. Step 3: Cross multiply
    66,508.62x = 91,793.31 × 63,519.18
  4. Step 4: Simplify right side
    66,508.62x = 5,830,635,780.69
  5. Step 5: Solve for x
    x = 5,830,635,780.69/66,508.62
  6. Step 6: Final answer
    x = 87,667.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.