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Finding the Third Proportional to 18,118.69 and 38,485.13

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Solution

The third proportional to 18,118.69 and 38,485.13 is: 81,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.69 : 38,485.13 = 38,485.13 : x
  2. Step 2: Convert to fraction form
    18,118.69/38,485.13 = 38,485.13/x
  3. Step 3: Cross multiply
    18,118.69x = 38,485.13 × 38,485.13
  4. Step 4: Simplify right side
    18,118.69x = 1,481,104,846.27
  5. Step 5: Solve for x
    x = 1,481,104,846.27/18,118.69
  6. Step 6: Final answer
    x = 81,744.60

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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.