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Finding the Fourth Proportional to 88,538.80, 132,613.80 and 76,874.80

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Solution

The fourth proportional to 88,538.80, 132,613.80 and 76,874.80 is: 115,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,538.80 : 132,613.80 = 76,874.80 : x
  2. Step 2: Convert to fraction form
    88,538.80/132,613.80 = 76,874.80/x
  3. Step 3: Cross multiply
    88,538.80x = 132,613.80 × 76,874.80
  4. Step 4: Simplify right side
    88,538.80x = 10,194,659,352.24
  5. Step 5: Solve for x
    x = 10,194,659,352.24/88,538.80
  6. Step 6: Final answer
    x = 115,143.41

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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.