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Finding the Third Proportional to 39,680 and 87,296

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Solution

The third proportional to 39,680 and 87,296 is: 192,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680 : 87,296 = 87,296 : x
  2. Step 2: Convert to fraction form
    39,680/87,296 = 87,296/x
  3. Step 3: Cross multiply
    39,680x = 87,296 × 87,296
  4. Step 4: Simplify right side
    39,680x = 7,620,591,616
  5. Step 5: Solve for x
    x = 7,620,591,616/39,680
  6. Step 6: Final answer
    x = 192,051.20

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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.