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Finding the Fourth Proportional to 80,747.28, 111,264.84 and 79,658.64

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Solution

The fourth proportional to 80,747.28, 111,264.84 and 79,658.64 is: 109,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,747.28 : 111,264.84 = 79,658.64 : x
  2. Step 2: Convert to fraction form
    80,747.28/111,264.84 = 79,658.64/x
  3. Step 3: Cross multiply
    80,747.28x = 111,264.84 × 79,658.64
  4. Step 4: Simplify right side
    80,747.28x = 8,863,205,834.22
  5. Step 5: Solve for x
    x = 8,863,205,834.22/80,747.28
  6. Step 6: Final answer
    x = 109,764.76

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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.