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Finding the Fourth Proportional to 80,687.52, 111,348.78 and 45,359.52

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Solution

The fourth proportional to 80,687.52, 111,348.78 and 45,359.52 is: 62,596.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687.52 : 111,348.78 = 45,359.52 : x
  2. Step 2: Convert to fraction form
    80,687.52/111,348.78 = 45,359.52/x
  3. Step 3: Cross multiply
    80,687.52x = 111,348.78 × 45,359.52
  4. Step 4: Simplify right side
    80,687.52x = 5,050,727,213.39
  5. Step 5: Solve for x
    x = 5,050,727,213.39/80,687.52
  6. Step 6: Final answer
    x = 62,596.14

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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.