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Finding the Third Proportional to 39,762 and 86,100

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Solution

The third proportional to 39,762 and 86,100 is: 186,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,762 : 86,100 = 86,100 : x
  2. Step 2: Convert to fraction form
    39,762/86,100 = 86,100/x
  3. Step 3: Cross multiply
    39,762x = 86,100 × 86,100
  4. Step 4: Simplify right side
    39,762x = 7,413,210,000
  5. Step 5: Solve for x
    x = 7,413,210,000/39,762
  6. Step 6: Final answer
    x = 186,439.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.