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Finding the Third Proportional to 39,999 and 84,930

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Solution

The third proportional to 39,999 and 84,930 is: 180,332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999 : 84,930 = 84,930 : x
  2. Step 2: Convert to fraction form
    39,999/84,930 = 84,930/x
  3. Step 3: Cross multiply
    39,999x = 84,930 × 84,930
  4. Step 4: Simplify right side
    39,999x = 7,213,104,900
  5. Step 5: Solve for x
    x = 7,213,104,900/39,999
  6. Step 6: Final answer
    x = 180,332.13

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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.