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Finding the Third Proportional to 18,781 and 43,670

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Solution

The third proportional to 18,781 and 43,670 is: 101,542.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781 : 43,670 = 43,670 : x
  2. Step 2: Convert to fraction form
    18,781/43,670 = 43,670/x
  3. Step 3: Cross multiply
    18,781x = 43,670 × 43,670
  4. Step 4: Simplify right side
    18,781x = 1,907,068,900
  5. Step 5: Solve for x
    x = 1,907,068,900/18,781
  6. Step 6: Final answer
    x = 101,542.46

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.