Home / 54,613.08-81,921.24-21,331.80

Finding the Fourth Proportional to 54,613.08, 81,921.24 and 21,331.80

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Solution

The fourth proportional to 54,613.08, 81,921.24 and 21,331.80 is: 31,998.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,613.08 : 81,921.24 = 21,331.80 : x
  2. Step 2: Convert to fraction form
    54,613.08/81,921.24 = 21,331.80/x
  3. Step 3: Cross multiply
    54,613.08x = 81,921.24 × 21,331.80
  4. Step 4: Simplify right side
    54,613.08x = 1,747,527,507.43
  5. Step 5: Solve for x
    x = 1,747,527,507.43/54,613.08
  6. Step 6: Final answer
    x = 31,998.33

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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.