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Finding the Fourth Proportional to 63,679.49, 87,850.44 and 39,764.64

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Solution

The fourth proportional to 63,679.49, 87,850.44 and 39,764.64 is: 54,858.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,679.49 : 87,850.44 = 39,764.64 : x
  2. Step 2: Convert to fraction form
    63,679.49/87,850.44 = 39,764.64/x
  3. Step 3: Cross multiply
    63,679.49x = 87,850.44 × 39,764.64
  4. Step 4: Simplify right side
    63,679.49x = 3,493,341,120.44
  5. Step 5: Solve for x
    x = 3,493,341,120.44/63,679.49
  6. Step 6: Final answer
    x = 54,858.18

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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.