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Finding the Fourth Proportional to 115,472.72, 159,343.27 and 64,481.47

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Solution

The fourth proportional to 115,472.72, 159,343.27 and 64,481.47 is: 88,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,472.72 : 159,343.27 = 64,481.47 : x
  2. Step 2: Convert to fraction form
    115,472.72/159,343.27 = 64,481.47/x
  3. Step 3: Cross multiply
    115,472.72x = 159,343.27 × 64,481.47
  4. Step 4: Simplify right side
    115,472.72x = 10,274,687,724.65
  5. Step 5: Solve for x
    x = 10,274,687,724.65/115,472.72
  6. Step 6: Final answer
    x = 88,979.35

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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.