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Finding the Fourth Proportional to 81,517.64, 112,452.62 and 54,340.52

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Solution

The fourth proportional to 81,517.64, 112,452.62 and 54,340.52 is: 74,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,517.64 : 112,452.62 = 54,340.52 : x
  2. Step 2: Convert to fraction form
    81,517.64/112,452.62 = 54,340.52/x
  3. Step 3: Cross multiply
    81,517.64x = 112,452.62 × 54,340.52
  4. Step 4: Simplify right side
    81,517.64x = 6,110,733,012.20
  5. Step 5: Solve for x
    x = 6,110,733,012.20/81,517.64
  6. Step 6: Final answer
    x = 74,962.10

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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.