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Finding the Third Proportional to 18,856 and 40,682

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Solution

The third proportional to 18,856 and 40,682 is: 87,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856 : 40,682 = 40,682 : x
  2. Step 2: Convert to fraction form
    18,856/40,682 = 40,682/x
  3. Step 3: Cross multiply
    18,856x = 40,682 × 40,682
  4. Step 4: Simplify right side
    18,856x = 1,655,025,124
  5. Step 5: Solve for x
    x = 1,655,025,124/18,856
  6. Step 6: Final answer
    x = 87,771.80

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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.