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Finding the Third Proportional to 18,619 and 40,693

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Solution

The third proportional to 18,619 and 40,693 is: 88,937.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619 : 40,693 = 40,693 : x
  2. Step 2: Convert to fraction form
    18,619/40,693 = 40,693/x
  3. Step 3: Cross multiply
    18,619x = 40,693 × 40,693
  4. Step 4: Simplify right side
    18,619x = 1,655,920,249
  5. Step 5: Solve for x
    x = 1,655,920,249/18,619
  6. Step 6: Final answer
    x = 88,937.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.