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Finding the Third Proportional to 18,105.75 and 39,894.75

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Solution

The third proportional to 18,105.75 and 39,894.75 is: 87,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.75 : 39,894.75 = 39,894.75 : x
  2. Step 2: Convert to fraction form
    18,105.75/39,894.75 = 39,894.75/x
  3. Step 3: Cross multiply
    18,105.75x = 39,894.75 × 39,894.75
  4. Step 4: Simplify right side
    18,105.75x = 1,591,591,077.56
  5. Step 5: Solve for x
    x = 1,591,591,077.56/18,105.75
  6. Step 6: Final answer
    x = 87,905.28

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.