Home / 80,406.36-120,609.96-33,009.18

Finding the Fourth Proportional to 80,406.36, 120,609.96 and 33,009.18

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Solution

The fourth proportional to 80,406.36, 120,609.96 and 33,009.18 is: 49,513.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,406.36 : 120,609.96 = 33,009.18 : x
  2. Step 2: Convert to fraction form
    80,406.36/120,609.96 = 33,009.18/x
  3. Step 3: Cross multiply
    80,406.36x = 120,609.96 × 33,009.18
  4. Step 4: Simplify right side
    80,406.36x = 3,981,235,879.43
  5. Step 5: Solve for x
    x = 3,981,235,879.43/80,406.36
  6. Step 6: Final answer
    x = 49,513.94

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Similar ratio
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1.5x scale

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.