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Finding the Third Proportional to 18,658.13 and 40,322.25

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Solution

The third proportional to 18,658.13 and 40,322.25 is: 87,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.13 : 40,322.25 = 40,322.25 : x
  2. Step 2: Convert to fraction form
    18,658.13/40,322.25 = 40,322.25/x
  3. Step 3: Cross multiply
    18,658.13x = 40,322.25 × 40,322.25
  4. Step 4: Simplify right side
    18,658.13x = 1,625,883,845.06
  5. Step 5: Solve for x
    x = 1,625,883,845.06/18,658.13
  6. Step 6: Final answer
    x = 87,140.79

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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.