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Finding the Third Proportional to 18,709,319.25 and 27,987,690.38

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Solution

The third proportional to 18,709,319.25 and 27,987,690.38 is: 41,867,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709,319.25 : 27,987,690.38 = 27,987,690.38 : x
  2. Step 2: Convert to fraction form
    18,709,319.25/27,987,690.38 = 27,987,690.38/x
  3. Step 3: Cross multiply
    18,709,319.25x = 27,987,690.38 × 27,987,690.38
  4. Step 4: Simplify right side
    18,709,319.25x = 783,310,812,526,867.62
  5. Step 5: Solve for x
    x = 783,310,812,526,867.62/18,709,319.25
  6. Step 6: Final answer
    x = 41,867,413.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.