Home / 81,377.40-122,084.76-31,457.92

Finding the Fourth Proportional to 81,377.40, 122,084.76 and 31,457.92

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Solution

The fourth proportional to 81,377.40, 122,084.76 and 31,457.92 is: 47,194.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,377.40 : 122,084.76 = 31,457.92 : x
  2. Step 2: Convert to fraction form
    81,377.40/122,084.76 = 31,457.92/x
  3. Step 3: Cross multiply
    81,377.40x = 122,084.76 × 31,457.92
  4. Step 4: Simplify right side
    81,377.40x = 3,840,532,613.30
  5. Step 5: Solve for x
    x = 3,840,532,613.30/81,377.40
  6. Step 6: Final answer
    x = 47,194.09

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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.