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Finding the Fourth Proportional to 81,341.92, 112,217.88 and 53,046.64

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Solution

The fourth proportional to 81,341.92, 112,217.88 and 53,046.64 is: 73,182.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,341.92 : 112,217.88 = 53,046.64 : x
  2. Step 2: Convert to fraction form
    81,341.92/112,217.88 = 53,046.64/x
  3. Step 3: Cross multiply
    81,341.92x = 112,217.88 × 53,046.64
  4. Step 4: Simplify right side
    81,341.92x = 5,952,781,481.92
  5. Step 5: Solve for x
    x = 5,952,781,481.92/81,341.92
  6. Step 6: Final answer
    x = 73,182.21

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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.