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Finding the Third Proportional to 18,808 and 40,118

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Solution

The third proportional to 18,808 and 40,118 is: 85,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808 : 40,118 = 40,118 : x
  2. Step 2: Convert to fraction form
    18,808/40,118 = 40,118/x
  3. Step 3: Cross multiply
    18,808x = 40,118 × 40,118
  4. Step 4: Simplify right side
    18,808x = 1,609,453,924
  5. Step 5: Solve for x
    x = 1,609,453,924/18,808
  6. Step 6: Final answer
    x = 85,572.84

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.