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Finding the Fourth Proportional to 69,388.92, 95,766.48 and 39,186.36

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Solution

The fourth proportional to 69,388.92, 95,766.48 and 39,186.36 is: 54,082.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,388.92 : 95,766.48 = 39,186.36 : x
  2. Step 2: Convert to fraction form
    69,388.92/95,766.48 = 39,186.36/x
  3. Step 3: Cross multiply
    69,388.92x = 95,766.48 × 39,186.36
  4. Step 4: Simplify right side
    69,388.92x = 3,752,739,761.21
  5. Step 5: Solve for x
    x = 3,752,739,761.21/69,388.92
  6. Step 6: Final answer
    x = 54,082.69

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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.