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Finding the Third Proportional to 3,987,582.50 and 8,747,169.50

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Solution

The third proportional to 3,987,582.50 and 8,747,169.50 is: 19,187,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,582.50 : 8,747,169.50 = 8,747,169.50 : x
  2. Step 2: Convert to fraction form
    3,987,582.50/8,747,169.50 = 8,747,169.50/x
  3. Step 3: Cross multiply
    3,987,582.50x = 8,747,169.50 × 8,747,169.50
  4. Step 4: Simplify right side
    3,987,582.50x = 76,512,974,261,730.25
  5. Step 5: Solve for x
    x = 76,512,974,261,730.25/3,987,582.50
  6. Step 6: Final answer
    x = 19,187,809.72

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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.