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Finding the Fourth Proportional to 78,892.44, 108,872.46 and 43,082.88

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Solution

The fourth proportional to 78,892.44, 108,872.46 and 43,082.88 is: 59,454.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.44 : 108,872.46 = 43,082.88 : x
  2. Step 2: Convert to fraction form
    78,892.44/108,872.46 = 43,082.88/x
  3. Step 3: Cross multiply
    78,892.44x = 108,872.46 × 43,082.88
  4. Step 4: Simplify right side
    78,892.44x = 4,690,539,129.48
  5. Step 5: Solve for x
    x = 4,690,539,129.48/78,892.44
  6. Step 6: Final answer
    x = 59,454.86

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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.