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Finding the Third Proportional to 18,257.75 and 39,245.25

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Solution

The third proportional to 18,257.75 and 39,245.25 is: 84,358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.75 : 39,245.25 = 39,245.25 : x
  2. Step 2: Convert to fraction form
    18,257.75/39,245.25 = 39,245.25/x
  3. Step 3: Cross multiply
    18,257.75x = 39,245.25 × 39,245.25
  4. Step 4: Simplify right side
    18,257.75x = 1,540,189,647.56
  5. Step 5: Solve for x
    x = 1,540,189,647.56/18,257.75
  6. Step 6: Final answer
    x = 84,358.13

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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.