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Finding the Third Proportional to 3,987,136.41 and 8,520,810.19

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Solution

The third proportional to 3,987,136.41 and 8,520,810.19 is: 18,209,611.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,136.41 : 8,520,810.19 = 8,520,810.19 : x
  2. Step 2: Convert to fraction form
    3,987,136.41/8,520,810.19 = 8,520,810.19/x
  3. Step 3: Cross multiply
    3,987,136.41x = 8,520,810.19 × 8,520,810.19
  4. Step 4: Simplify right side
    3,987,136.41x = 72,604,206,251,403.78
  5. Step 5: Solve for x
    x = 72,604,206,251,403.78/3,987,136.41
  6. Step 6: Final answer
    x = 18,209,611.83

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.