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Finding the Fourth Proportional to 80,959.44, 121,444.92 and 25,554

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Solution

The fourth proportional to 80,959.44, 121,444.92 and 25,554 is: 38,332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,959.44 : 121,444.92 = 25,554 : x
  2. Step 2: Convert to fraction form
    80,959.44/121,444.92 = 25,554/x
  3. Step 3: Cross multiply
    80,959.44x = 121,444.92 × 25,554
  4. Step 4: Simplify right side
    80,959.44x = 3,103,403,485.68
  5. Step 5: Solve for x
    x = 3,103,403,485.68/80,959.44
  6. Step 6: Final answer
    x = 38,332.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.