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Finding the Fourth Proportional to 8,367,991.80, 12,546,082.80 and 3,821,218.80

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Solution

The fourth proportional to 8,367,991.80, 12,546,082.80 and 3,821,218.80 is: 5,729,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,367,991.80 : 12,546,082.80 = 3,821,218.80 : x
  2. Step 2: Convert to fraction form
    8,367,991.80/12,546,082.80 = 3,821,218.80/x
  3. Step 3: Cross multiply
    8,367,991.80x = 12,546,082.80 × 3,821,218.80
  4. Step 4: Simplify right side
    8,367,991.80x = 47,941,327,461,716.64
  5. Step 5: Solve for x
    x = 47,941,327,461,716.64/8,367,991.80
  6. Step 6: Final answer
    x = 5,729,131.74

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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.