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Finding the Fourth Proportional to 80,236.80, 110,728.52 and 43,939.77

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Solution

The fourth proportional to 80,236.80, 110,728.52 and 43,939.77 is: 60,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,236.80 : 110,728.52 = 43,939.77 : x
  2. Step 2: Convert to fraction form
    80,236.80/110,728.52 = 43,939.77/x
  3. Step 3: Cross multiply
    80,236.80x = 110,728.52 × 43,939.77
  4. Step 4: Simplify right side
    80,236.80x = 4,865,385,481.54
  5. Step 5: Solve for x
    x = 4,865,385,481.54/80,236.80
  6. Step 6: Final answer
    x = 60,637.83

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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.