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Finding the Third Proportional to 39,927 and 86,943

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Solution

The third proportional to 39,927 and 86,943 is: 189,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,927 : 86,943 = 86,943 : x
  2. Step 2: Convert to fraction form
    39,927/86,943 = 86,943/x
  3. Step 3: Cross multiply
    39,927x = 86,943 × 86,943
  4. Step 4: Simplify right side
    39,927x = 7,559,085,249
  5. Step 5: Solve for x
    x = 7,559,085,249/39,927
  6. Step 6: Final answer
    x = 189,322.65

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.