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Finding the Third Proportional to 18,579 and 40,188

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Solution

The third proportional to 18,579 and 40,188 is: 86,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579 : 40,188 = 40,188 : x
  2. Step 2: Convert to fraction form
    18,579/40,188 = 40,188/x
  3. Step 3: Cross multiply
    18,579x = 40,188 × 40,188
  4. Step 4: Simplify right side
    18,579x = 1,615,075,344
  5. Step 5: Solve for x
    x = 1,615,075,344/18,579
  6. Step 6: Final answer
    x = 86,930.15

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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.