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Finding the Third Proportional to 18,279.75 and 39,915.75

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Solution

The third proportional to 18,279.75 and 39,915.75 is: 87,160.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.75 : 39,915.75 = 39,915.75 : x
  2. Step 2: Convert to fraction form
    18,279.75/39,915.75 = 39,915.75/x
  3. Step 3: Cross multiply
    18,279.75x = 39,915.75 × 39,915.75
  4. Step 4: Simplify right side
    18,279.75x = 1,593,267,098.06
  5. Step 5: Solve for x
    x = 1,593,267,098.06/18,279.75
  6. Step 6: Final answer
    x = 87,160.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.