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Finding the Third Proportional to 39,912 and 87,600

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Solution

The third proportional to 39,912 and 87,600 is: 192,266.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912 : 87,600 = 87,600 : x
  2. Step 2: Convert to fraction form
    39,912/87,600 = 87,600/x
  3. Step 3: Cross multiply
    39,912x = 87,600 × 87,600
  4. Step 4: Simplify right side
    39,912x = 7,673,760,000
  5. Step 5: Solve for x
    x = 7,673,760,000/39,912
  6. Step 6: Final answer
    x = 192,266.99

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.