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Finding the Third Proportional to 18,748.13 and 40,609.69

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Solution

The third proportional to 18,748.13 and 40,609.69 is: 87,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.13 : 40,609.69 = 40,609.69 : x
  2. Step 2: Convert to fraction form
    18,748.13/40,609.69 = 40,609.69/x
  3. Step 3: Cross multiply
    18,748.13x = 40,609.69 × 40,609.69
  4. Step 4: Simplify right side
    18,748.13x = 1,649,146,718.85
  5. Step 5: Solve for x
    x = 1,649,146,718.85/18,748.13
  6. Step 6: Final answer
    x = 87,963.29

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.