Home / 81,437.20-122,015.52-63,660.96

Finding the Fourth Proportional to 81,437.20, 122,015.52 and 63,660.96

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Solution

The fourth proportional to 81,437.20, 122,015.52 and 63,660.96 is: 95,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437.20 : 122,015.52 = 63,660.96 : x
  2. Step 2: Convert to fraction form
    81,437.20/122,015.52 = 63,660.96/x
  3. Step 3: Cross multiply
    81,437.20x = 122,015.52 × 63,660.96
  4. Step 4: Simplify right side
    81,437.20x = 7,767,625,138.10
  5. Step 5: Solve for x
    x = 7,767,625,138.10/81,437.20
  6. Step 6: Final answer
    x = 95,381.78

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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.