Home / 80,991.20-121,227.60-43,459.04

Finding the Fourth Proportional to 80,991.20, 121,227.60 and 43,459.04

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Solution

The fourth proportional to 80,991.20, 121,227.60 and 43,459.04 is: 65,049.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,991.20 : 121,227.60 = 43,459.04 : x
  2. Step 2: Convert to fraction form
    80,991.20/121,227.60 = 43,459.04/x
  3. Step 3: Cross multiply
    80,991.20x = 121,227.60 × 43,459.04
  4. Step 4: Simplify right side
    80,991.20x = 5,268,435,117.50
  5. Step 5: Solve for x
    x = 5,268,435,117.50/80,991.20
  6. Step 6: Final answer
    x = 65,049.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.