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Finding the Fourth Proportional to 80,578.28, 120,867.42 and 25,174.28

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Solution

The fourth proportional to 80,578.28, 120,867.42 and 25,174.28 is: 37,761.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,578.28 : 120,867.42 = 25,174.28 : x
  2. Step 2: Convert to fraction form
    80,578.28/120,867.42 = 25,174.28/x
  3. Step 3: Cross multiply
    80,578.28x = 120,867.42 × 25,174.28
  4. Step 4: Simplify right side
    80,578.28x = 3,042,750,273.96
  5. Step 5: Solve for x
    x = 3,042,750,273.96/80,578.28
  6. Step 6: Final answer
    x = 37,761.42

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Similar ratio
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1.5x scale

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.