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Finding the Fourth Proportional to 99,850.77, 137,788.91 and 54,520.01

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Solution

The fourth proportional to 99,850.77, 137,788.91 and 54,520.01 is: 75,234.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,850.77 : 137,788.91 = 54,520.01 : x
  2. Step 2: Convert to fraction form
    99,850.77/137,788.91 = 54,520.01/x
  3. Step 3: Cross multiply
    99,850.77x = 137,788.91 × 54,520.01
  4. Step 4: Simplify right side
    99,850.77x = 7,512,251,789.54
  5. Step 5: Solve for x
    x = 7,512,251,789.54/99,850.77
  6. Step 6: Final answer
    x = 75,234.79

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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.