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Finding the Fourth Proportional to 90,446.28, 124,672.04 and 71,295

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Solution

The fourth proportional to 90,446.28, 124,672.04 and 71,295 is: 98,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,446.28 : 124,672.04 = 71,295 : x
  2. Step 2: Convert to fraction form
    90,446.28/124,672.04 = 71,295/x
  3. Step 3: Cross multiply
    90,446.28x = 124,672.04 × 71,295
  4. Step 4: Simplify right side
    90,446.28x = 8,888,493,091.80
  5. Step 5: Solve for x
    x = 8,888,493,091.80/90,446.28
  6. Step 6: Final answer
    x = 98,273.73

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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.