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Finding the Third Proportional to 18,640.13 and 40,758.19

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Solution

The third proportional to 18,640.13 and 40,758.19 is: 89,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.13 : 40,758.19 = 40,758.19 : x
  2. Step 2: Convert to fraction form
    18,640.13/40,758.19 = 40,758.19/x
  3. Step 3: Cross multiply
    18,640.13x = 40,758.19 × 40,758.19
  4. Step 4: Simplify right side
    18,640.13x = 1,661,229,848.29
  5. Step 5: Solve for x
    x = 1,661,229,848.29/18,640.13
  6. Step 6: Final answer
    x = 89,121.18

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.