Home / 80,712.72-111,366.92-47,172.24

Finding the Fourth Proportional to 80,712.72, 111,366.92 and 47,172.24

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Solution

The fourth proportional to 80,712.72, 111,366.92 and 47,172.24 is: 65,087.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712.72 : 111,366.92 = 47,172.24 : x
  2. Step 2: Convert to fraction form
    80,712.72/111,366.92 = 47,172.24/x
  3. Step 3: Cross multiply
    80,712.72x = 111,366.92 × 47,172.24
  4. Step 4: Simplify right side
    80,712.72x = 5,253,427,078.30
  5. Step 5: Solve for x
    x = 5,253,427,078.30/80,712.72
  6. Step 6: Final answer
    x = 65,087.97

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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.