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Finding the Fourth Proportional to 81,776.67, 112,853.22 and 45,481.11

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Solution

The fourth proportional to 81,776.67, 112,853.22 and 45,481.11 is: 62,764.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,776.67 : 112,853.22 = 45,481.11 : x
  2. Step 2: Convert to fraction form
    81,776.67/112,853.22 = 45,481.11/x
  3. Step 3: Cross multiply
    81,776.67x = 112,853.22 × 45,481.11
  4. Step 4: Simplify right side
    81,776.67x = 5,132,689,712.67
  5. Step 5: Solve for x
    x = 5,132,689,712.67/81,776.67
  6. Step 6: Final answer
    x = 62,764.72

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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.