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Finding the Third Proportional to 18,613.13 and 38,729.81

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Solution

The third proportional to 18,613.13 and 38,729.81 is: 80,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.13 : 38,729.81 = 38,729.81 : x
  2. Step 2: Convert to fraction form
    18,613.13/38,729.81 = 38,729.81/x
  3. Step 3: Cross multiply
    18,613.13x = 38,729.81 × 38,729.81
  4. Step 4: Simplify right side
    18,613.13x = 1,499,998,376.29
  5. Step 5: Solve for x
    x = 1,499,998,376.29/18,613.13
  6. Step 6: Final answer
    x = 80,588.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.