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Finding the Third Proportional to 18,121 and 36,753

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Solution

The third proportional to 18,121 and 36,753 is: 74,542.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121 : 36,753 = 36,753 : x
  2. Step 2: Convert to fraction form
    18,121/36,753 = 36,753/x
  3. Step 3: Cross multiply
    18,121x = 36,753 × 36,753
  4. Step 4: Simplify right side
    18,121x = 1,350,783,009
  5. Step 5: Solve for x
    x = 1,350,783,009/18,121
  6. Step 6: Final answer
    x = 74,542.41

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.