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Finding the Fourth Proportional to 40,452.75, 60,691.07 and 20,745.11

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Solution

The fourth proportional to 40,452.75, 60,691.07 and 20,745.11 is: 31,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,452.75 : 60,691.07 = 20,745.11 : x
  2. Step 2: Convert to fraction form
    40,452.75/60,691.07 = 20,745.11/x
  3. Step 3: Cross multiply
    40,452.75x = 60,691.07 × 20,745.11
  4. Step 4: Simplify right side
    40,452.75x = 1,259,043,126.76
  5. Step 5: Solve for x
    x = 1,259,043,126.76/40,452.75
  6. Step 6: Final answer
    x = 31,123.80

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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.