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Finding the Fourth Proportional to 81,151.52, 111,925.86 and 52,082.72

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Solution

The fourth proportional to 81,151.52, 111,925.86 and 52,082.72 is: 71,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,151.52 : 111,925.86 = 52,082.72 : x
  2. Step 2: Convert to fraction form
    81,151.52/111,925.86 = 52,082.72/x
  3. Step 3: Cross multiply
    81,151.52x = 111,925.86 × 52,082.72
  4. Step 4: Simplify right side
    81,151.52x = 5,829,403,227.14
  5. Step 5: Solve for x
    x = 5,829,403,227.14/81,151.52
  6. Step 6: Final answer
    x = 71,833.57

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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.