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Finding the Third Proportional to 18,316.13 and 40,138.66

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Solution

The third proportional to 18,316.13 and 40,138.66 is: 87,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.13 : 40,138.66 = 40,138.66 : x
  2. Step 2: Convert to fraction form
    18,316.13/40,138.66 = 40,138.66/x
  3. Step 3: Cross multiply
    18,316.13x = 40,138.66 × 40,138.66
  4. Step 4: Simplify right side
    18,316.13x = 1,611,112,352.72
  5. Step 5: Solve for x
    x = 1,611,112,352.72/18,316.13
  6. Step 6: Final answer
    x = 87,961.42

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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.