Home / 81,912.17-122,868.30-22,747.85

Finding the Fourth Proportional to 81,912.17, 122,868.30 and 22,747.85

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Solution

The fourth proportional to 81,912.17, 122,868.30 and 22,747.85 is: 34,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,912.17 : 122,868.30 = 22,747.85 : x
  2. Step 2: Convert to fraction form
    81,912.17/122,868.30 = 22,747.85/x
  3. Step 3: Cross multiply
    81,912.17x = 122,868.30 × 22,747.85
  4. Step 4: Simplify right side
    81,912.17x = 2,794,989,589.87
  5. Step 5: Solve for x
    x = 2,794,989,589.87/81,912.17
  6. Step 6: Final answer
    x = 34,121.79

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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.