Home / 80,721.43-121,082.24-38,591.60

Finding the Fourth Proportional to 80,721.43, 121,082.24 and 38,591.60

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Solution

The fourth proportional to 80,721.43, 121,082.24 and 38,591.60 is: 57,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721.43 : 121,082.24 = 38,591.60 : x
  2. Step 2: Convert to fraction form
    80,721.43/121,082.24 = 38,591.60/x
  3. Step 3: Cross multiply
    80,721.43x = 121,082.24 × 38,591.60
  4. Step 4: Simplify right side
    80,721.43x = 4,672,757,180.23
  5. Step 5: Solve for x
    x = 4,672,757,180.23/80,721.43
  6. Step 6: Final answer
    x = 57,887.45

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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.