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Finding the Fourth Proportional to 81,765.60, 112,833.57 and 45,957.57

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Solution

The fourth proportional to 81,765.60, 112,833.57 and 45,957.57 is: 63,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,765.60 : 112,833.57 = 45,957.57 : x
  2. Step 2: Convert to fraction form
    81,765.60/112,833.57 = 45,957.57/x
  3. Step 3: Cross multiply
    81,765.60x = 112,833.57 × 45,957.57
  4. Step 4: Simplify right side
    81,765.60x = 5,185,556,691.62
  5. Step 5: Solve for x
    x = 5,185,556,691.62/81,765.60
  6. Step 6: Final answer
    x = 63,419.78

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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.