Home / 72,568,861.20-108,703,992.60-36,687,286.80

Finding the Fourth Proportional to 72,568,861.20, 108,703,992.60 and 36,687,286.80

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Solution

The fourth proportional to 72,568,861.20, 108,703,992.60 and 36,687,286.80 is: 54,955,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,568,861.20 : 108,703,992.60 = 36,687,286.80 : x
  2. Step 2: Convert to fraction form
    72,568,861.20/108,703,992.60 = 36,687,286.80/x
  3. Step 3: Cross multiply
    72,568,861.20x = 108,703,992.60 × 36,687,286.80
  4. Step 4: Simplify right side
    72,568,861.20x = 3,988,054,552,821,277
  5. Step 5: Solve for x
    x = 3,988,054,552,821,277/72,568,861.20
  6. Step 6: Final answer
    x = 54,955,451.79

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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.