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Finding the Third Proportional to 40,131 and 86,823

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Solution

The third proportional to 40,131 and 86,823 is: 187,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,131 : 86,823 = 86,823 : x
  2. Step 2: Convert to fraction form
    40,131/86,823 = 86,823/x
  3. Step 3: Cross multiply
    40,131x = 86,823 × 86,823
  4. Step 4: Simplify right side
    40,131x = 7,538,233,329
  5. Step 5: Solve for x
    x = 7,538,233,329/40,131
  6. Step 6: Final answer
    x = 187,840.66

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.