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Finding the Third Proportional to 18,641.25 and 36,342

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Solution

The third proportional to 18,641.25 and 36,342 is: 70,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.25 : 36,342 = 36,342 : x
  2. Step 2: Convert to fraction form
    18,641.25/36,342 = 36,342/x
  3. Step 3: Cross multiply
    18,641.25x = 36,342 × 36,342
  4. Step 4: Simplify right side
    18,641.25x = 1,320,740,964
  5. Step 5: Solve for x
    x = 1,320,740,964/18,641.25
  6. Step 6: Final answer
    x = 70,850.45

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.