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Finding the Third Proportional to 27,620 and 60,640

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Solution

The third proportional to 27,620 and 60,640 is: 133,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,620 : 60,640 = 60,640 : x
  2. Step 2: Convert to fraction form
    27,620/60,640 = 60,640/x
  3. Step 3: Cross multiply
    27,620x = 60,640 × 60,640
  4. Step 4: Simplify right side
    27,620x = 3,677,209,600
  5. Step 5: Solve for x
    x = 3,677,209,600/27,620
  6. Step 6: Final answer
    x = 133,135.76

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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.