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Finding the Third Proportional to 39,888 and 84,636

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Solution

The third proportional to 39,888 and 84,636 is: 179,584.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888 : 84,636 = 84,636 : x
  2. Step 2: Convert to fraction form
    39,888/84,636 = 84,636/x
  3. Step 3: Cross multiply
    39,888x = 84,636 × 84,636
  4. Step 4: Simplify right side
    39,888x = 7,163,252,496
  5. Step 5: Solve for x
    x = 7,163,252,496/39,888
  6. Step 6: Final answer
    x = 179,584.15

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.