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Finding the Fourth Proportional to 71,680.44, 107,487.06 and 38,394.36

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Solution

The fourth proportional to 71,680.44, 107,487.06 and 38,394.36 is: 57,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.44 : 107,487.06 = 38,394.36 : x
  2. Step 2: Convert to fraction form
    71,680.44/107,487.06 = 38,394.36/x
  3. Step 3: Cross multiply
    71,680.44x = 107,487.06 × 38,394.36
  4. Step 4: Simplify right side
    71,680.44x = 4,126,896,876.98
  5. Step 5: Solve for x
    x = 4,126,896,876.98/71,680.44
  6. Step 6: Final answer
    x = 57,573.54

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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.