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Finding the Third Proportional to 47,640 and 107,418

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Solution

The third proportional to 47,640 and 107,418 is: 242,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,640 : 107,418 = 107,418 : x
  2. Step 2: Convert to fraction form
    47,640/107,418 = 107,418/x
  3. Step 3: Cross multiply
    47,640x = 107,418 × 107,418
  4. Step 4: Simplify right side
    47,640x = 11,538,626,724
  5. Step 5: Solve for x
    x = 11,538,626,724/47,640
  6. Step 6: Final answer
    x = 242,204.59

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.