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Finding the Fourth Proportional to 63,736.80, 87,978.60 and 38,586.28

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Solution

The fourth proportional to 63,736.80, 87,978.60 and 38,586.28 is: 53,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,736.80 : 87,978.60 = 38,586.28 : x
  2. Step 2: Convert to fraction form
    63,736.80/87,978.60 = 38,586.28/x
  3. Step 3: Cross multiply
    63,736.80x = 87,978.60 × 38,586.28
  4. Step 4: Simplify right side
    63,736.80x = 3,394,766,893.61
  5. Step 5: Solve for x
    x = 3,394,766,893.61/63,736.80
  6. Step 6: Final answer
    x = 53,262.27

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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.