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Finding the Fourth Proportional to 63,374.85, 87,479.31 and 39,194.33

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Solution

The fourth proportional to 63,374.85, 87,479.31 and 39,194.33 is: 54,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,374.85 : 87,479.31 = 39,194.33 : x
  2. Step 2: Convert to fraction form
    63,374.85/87,479.31 = 39,194.33/x
  3. Step 3: Cross multiply
    63,374.85x = 87,479.31 × 39,194.33
  4. Step 4: Simplify right side
    63,374.85x = 3,428,692,310.94
  5. Step 5: Solve for x
    x = 3,428,692,310.94/63,374.85
  6. Step 6: Final answer
    x = 54,101.78

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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.