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Finding the Fourth Proportional to 80,318.92, 110,891.70 and 51,650.84

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Solution

The fourth proportional to 80,318.92, 110,891.70 and 51,650.84 is: 71,311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,318.92 : 110,891.70 = 51,650.84 : x
  2. Step 2: Convert to fraction form
    80,318.92/110,891.70 = 51,650.84/x
  3. Step 3: Cross multiply
    80,318.92x = 110,891.70 × 51,650.84
  4. Step 4: Simplify right side
    80,318.92x = 5,727,649,454.03
  5. Step 5: Solve for x
    x = 5,727,649,454.03/80,318.92
  6. Step 6: Final answer
    x = 71,311.34

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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.