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Finding the Fourth Proportional to 123,532.62, 170,475 and 66,944

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Solution

The fourth proportional to 123,532.62, 170,475 and 66,944 is: 92,382.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,532.62 : 170,475 = 66,944 : x
  2. Step 2: Convert to fraction form
    123,532.62/170,475 = 66,944/x
  3. Step 3: Cross multiply
    123,532.62x = 170,475 × 66,944
  4. Step 4: Simplify right side
    123,532.62x = 11,412,278,400
  5. Step 5: Solve for x
    x = 11,412,278,400/123,532.62
  6. Step 6: Final answer
    x = 92,382.71

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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.