Home / 40,025,861.70-55,235,736.42-21,691,147.20

Finding the Fourth Proportional to 40,025,861.70, 55,235,736.42 and 21,691,147.20

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Solution

The fourth proportional to 40,025,861.70, 55,235,736.42 and 21,691,147.20 is: 29,933,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025,861.70 : 55,235,736.42 = 21,691,147.20 : x
  2. Step 2: Convert to fraction form
    40,025,861.70/55,235,736.42 = 21,691,147.20/x
  3. Step 3: Cross multiply
    40,025,861.70x = 55,235,736.42 × 21,691,147.20
  4. Step 4: Simplify right side
    40,025,861.70x = 1,198,126,489,386,621
  5. Step 5: Solve for x
    x = 1,198,126,489,386,621/40,025,861.70
  6. Step 6: Final answer
    x = 29,933,808.76

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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.