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Finding the Fourth Proportional to 80,543.77, 111,162.53 and 57,957.53

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Solution

The fourth proportional to 80,543.77, 111,162.53 and 57,957.53 is: 79,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,543.77 : 111,162.53 = 57,957.53 : x
  2. Step 2: Convert to fraction form
    80,543.77/111,162.53 = 57,957.53/x
  3. Step 3: Cross multiply
    80,543.77x = 111,162.53 × 57,957.53
  4. Step 4: Simplify right side
    80,543.77x = 6,442,704,930.42
  5. Step 5: Solve for x
    x = 6,442,704,930.42/80,543.77
  6. Step 6: Final answer
    x = 79,990.11

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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.