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Finding the Third Proportional to 18,537.38 and 39,990.75

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Solution

The third proportional to 18,537.38 and 39,990.75 is: 86,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.38 : 39,990.75 = 39,990.75 : x
  2. Step 2: Convert to fraction form
    18,537.38/39,990.75 = 39,990.75/x
  3. Step 3: Cross multiply
    18,537.38x = 39,990.75 × 39,990.75
  4. Step 4: Simplify right side
    18,537.38x = 1,599,260,085.56
  5. Step 5: Solve for x
    x = 1,599,260,085.56/18,537.38
  6. Step 6: Final answer
    x = 86,272.20

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.