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Finding the Fourth Proportional to 8,165,003.20, 12,247,504.80 and 8,165,003.20

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Solution

The fourth proportional to 8,165,003.20, 12,247,504.80 and 8,165,003.20 is: 12,247,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165,003.20 : 12,247,504.80 = 8,165,003.20 : x
  2. Step 2: Convert to fraction form
    8,165,003.20/12,247,504.80 = 8,165,003.20/x
  3. Step 3: Cross multiply
    8,165,003.20x = 12,247,504.80 × 8,165,003.20
  4. Step 4: Simplify right side
    8,165,003.20x = 100,000,915,884,015.38
  5. Step 5: Solve for x
    x = 100,000,915,884,015.38/8,165,003.20
  6. Step 6: Final answer
    x = 12,247,504.80

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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.