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Finding the Third Proportional to 45,638 and 68,270

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Solution

The third proportional to 45,638 and 68,270 is: 102,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,638 : 68,270 = 68,270 : x
  2. Step 2: Convert to fraction form
    45,638/68,270 = 68,270/x
  3. Step 3: Cross multiply
    45,638x = 68,270 × 68,270
  4. Step 4: Simplify right side
    45,638x = 4,660,792,900
  5. Step 5: Solve for x
    x = 4,660,792,900/45,638
  6. Step 6: Final answer
    x = 102,125.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.