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Finding the Fourth Proportional to 63,755, 95,647.86 and 19,979

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Solution

The fourth proportional to 63,755, 95,647.86 and 19,979 is: 29,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,755 : 95,647.86 = 19,979 : x
  2. Step 2: Convert to fraction form
    63,755/95,647.86 = 19,979/x
  3. Step 3: Cross multiply
    63,755x = 95,647.86 × 19,979
  4. Step 4: Simplify right side
    63,755x = 1,910,948,594.94
  5. Step 5: Solve for x
    x = 1,910,948,594.94/63,755
  6. Step 6: Final answer
    x = 29,973.31

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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.