Home / 81,489.06-112,454.70-49,658.04

Finding the Fourth Proportional to 81,489.06, 112,454.70 and 49,658.04

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Solution

The fourth proportional to 81,489.06, 112,454.70 and 49,658.04 is: 68,527.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,489.06 : 112,454.70 = 49,658.04 : x
  2. Step 2: Convert to fraction form
    81,489.06/112,454.70 = 49,658.04/x
  3. Step 3: Cross multiply
    81,489.06x = 112,454.70 × 49,658.04
  4. Step 4: Simplify right side
    81,489.06x = 5,584,279,990.79
  5. Step 5: Solve for x
    x = 5,584,279,990.79/81,489.06
  6. Step 6: Final answer
    x = 68,527.97

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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.