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Finding the Fourth Proportional to 80,785.92, 111,497.92 and 47,245.44

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Solution

The fourth proportional to 80,785.92, 111,497.92 and 47,245.44 is: 65,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,785.92 : 111,497.92 = 47,245.44 : x
  2. Step 2: Convert to fraction form
    80,785.92/111,497.92 = 47,245.44/x
  3. Step 3: Cross multiply
    80,785.92x = 111,497.92 × 47,245.44
  4. Step 4: Simplify right side
    80,785.92x = 5,267,768,289.48
  5. Step 5: Solve for x
    x = 5,267,768,289.48/80,785.92
  6. Step 6: Final answer
    x = 65,206.51

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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.