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Finding the Third Proportional to 18,161.40 and 38,487.02

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Solution

The third proportional to 18,161.40 and 38,487.02 is: 81,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.40 : 38,487.02 = 38,487.02 : x
  2. Step 2: Convert to fraction form
    18,161.40/38,487.02 = 38,487.02/x
  3. Step 3: Cross multiply
    18,161.40x = 38,487.02 × 38,487.02
  4. Step 4: Simplify right side
    18,161.40x = 1,481,250,973.08
  5. Step 5: Solve for x
    x = 1,481,250,973.08/18,161.40
  6. Step 6: Final answer
    x = 81,560.39

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.