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Finding the Fourth Proportional to 80,543.92, 111,162.74 and 57,957.68

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Solution

The fourth proportional to 80,543.92, 111,162.74 and 57,957.68 is: 79,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,543.92 : 111,162.74 = 57,957.68 : x
  2. Step 2: Convert to fraction form
    80,543.92/111,162.74 = 57,957.68/x
  3. Step 3: Cross multiply
    80,543.92x = 111,162.74 × 57,957.68
  4. Step 4: Simplify right side
    80,543.92x = 6,442,734,512.84
  5. Step 5: Solve for x
    x = 6,442,734,512.84/80,543.92
  6. Step 6: Final answer
    x = 79,990.33

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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.