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Finding the Fourth Proportional to 89,859.54, 134,789.52 and 50,419.73

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Solution

The fourth proportional to 89,859.54, 134,789.52 and 50,419.73 is: 75,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.54 : 134,789.52 = 50,419.73 : x
  2. Step 2: Convert to fraction form
    89,859.54/134,789.52 = 50,419.73/x
  3. Step 3: Cross multiply
    89,859.54x = 134,789.52 × 50,419.73
  4. Step 4: Simplify right side
    89,859.54x = 6,796,050,531.28
  5. Step 5: Solve for x
    x = 6,796,050,531.28/89,859.54
  6. Step 6: Final answer
    x = 75,629.71

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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.