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Finding the Third Proportional to 39,393 and 84,636

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Solution

The third proportional to 39,393 and 84,636 is: 181,840.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,393 : 84,636 = 84,636 : x
  2. Step 2: Convert to fraction form
    39,393/84,636 = 84,636/x
  3. Step 3: Cross multiply
    39,393x = 84,636 × 84,636
  4. Step 4: Simplify right side
    39,393x = 7,163,252,496
  5. Step 5: Solve for x
    x = 7,163,252,496/39,393
  6. Step 6: Final answer
    x = 181,840.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.