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Finding the Third Proportional to 18,125 and 39,929

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Solution

The third proportional to 18,125 and 39,929 is: 87,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125 : 39,929 = 39,929 : x
  2. Step 2: Convert to fraction form
    18,125/39,929 = 39,929/x
  3. Step 3: Cross multiply
    18,125x = 39,929 × 39,929
  4. Step 4: Simplify right side
    18,125x = 1,594,325,041
  5. Step 5: Solve for x
    x = 1,594,325,041/18,125
  6. Step 6: Final answer
    x = 87,962.76

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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.