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Finding the Fourth Proportional to 78,760.30, 108,691.92 and 44,770.21

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Solution

The fourth proportional to 78,760.30, 108,691.92 and 44,770.21 is: 61,784.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760.30 : 108,691.92 = 44,770.21 : x
  2. Step 2: Convert to fraction form
    78,760.30/108,691.92 = 44,770.21/x
  3. Step 3: Cross multiply
    78,760.30x = 108,691.92 × 44,770.21
  4. Step 4: Simplify right side
    78,760.30x = 4,866,160,083.70
  5. Step 5: Solve for x
    x = 4,866,160,083.70/78,760.30
  6. Step 6: Final answer
    x = 61,784.43

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1.5x scale

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.