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Finding the Third Proportional to 18,647.25 and 36,349.50

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Solution

The third proportional to 18,647.25 and 36,349.50 is: 70,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.25 : 36,349.50 = 36,349.50 : x
  2. Step 2: Convert to fraction form
    18,647.25/36,349.50 = 36,349.50/x
  3. Step 3: Cross multiply
    18,647.25x = 36,349.50 × 36,349.50
  4. Step 4: Simplify right side
    18,647.25x = 1,321,286,150.25
  5. Step 5: Solve for x
    x = 1,321,286,150.25/18,647.25
  6. Step 6: Final answer
    x = 70,856.89

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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.