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Finding the Third Proportional to 18,165.38 and 39,114

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Solution

The third proportional to 18,165.38 and 39,114 is: 84,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165.38 : 39,114 = 39,114 : x
  2. Step 2: Convert to fraction form
    18,165.38/39,114 = 39,114/x
  3. Step 3: Cross multiply
    18,165.38x = 39,114 × 39,114
  4. Step 4: Simplify right side
    18,165.38x = 1,529,904,996
  5. Step 5: Solve for x
    x = 1,529,904,996/18,165.38
  6. Step 6: Final answer
    x = 84,220.94

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.