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Finding the Third Proportional to 18,370 and 40,136

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Solution

The third proportional to 18,370 and 40,136 is: 87,691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370 : 40,136 = 40,136 : x
  2. Step 2: Convert to fraction form
    18,370/40,136 = 40,136/x
  3. Step 3: Cross multiply
    18,370x = 40,136 × 40,136
  4. Step 4: Simplify right side
    18,370x = 1,610,898,496
  5. Step 5: Solve for x
    x = 1,610,898,496/18,370
  6. Step 6: Final answer
    x = 87,691.81

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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.