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Finding the Third Proportional to 12,608 and 29,440

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Solution

The third proportional to 12,608 and 29,440 is: 68,743.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608 : 29,440 = 29,440 : x
  2. Step 2: Convert to fraction form
    12,608/29,440 = 29,440/x
  3. Step 3: Cross multiply
    12,608x = 29,440 × 29,440
  4. Step 4: Simplify right side
    12,608x = 866,713,600
  5. Step 5: Solve for x
    x = 866,713,600/12,608
  6. Step 6: Final answer
    x = 68,743.15

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.