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Finding the Third Proportional to 47,800 and 74,256

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Solution

The third proportional to 47,800 and 74,256 is: 115,354.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,800 : 74,256 = 74,256 : x
  2. Step 2: Convert to fraction form
    47,800/74,256 = 74,256/x
  3. Step 3: Cross multiply
    47,800x = 74,256 × 74,256
  4. Step 4: Simplify right side
    47,800x = 5,513,953,536
  5. Step 5: Solve for x
    x = 5,513,953,536/47,800
  6. Step 6: Final answer
    x = 115,354.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.