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Finding the Fourth Proportional to 63,679.43, 87,850.35 and 39,764.58

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Solution

The fourth proportional to 63,679.43, 87,850.35 and 39,764.58 is: 54,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,679.43 : 87,850.35 = 39,764.58 : x
  2. Step 2: Convert to fraction form
    63,679.43/87,850.35 = 39,764.58/x
  3. Step 3: Cross multiply
    63,679.43x = 87,850.35 × 39,764.58
  4. Step 4: Simplify right side
    63,679.43x = 3,493,332,270.60
  5. Step 5: Solve for x
    x = 3,493,332,270.60/63,679.43
  6. Step 6: Final answer
    x = 54,858.10

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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.