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Finding the Fourth Proportional to 8,690,892.80, 11,950,891.84 and 7,542,974.08

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Solution

The fourth proportional to 8,690,892.80, 11,950,891.84 and 7,542,974.08 is: 10,372,382.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,892.80 : 11,950,891.84 = 7,542,974.08 : x
  2. Step 2: Convert to fraction form
    8,690,892.80/11,950,891.84 = 7,542,974.08/x
  3. Step 3: Cross multiply
    8,690,892.80x = 11,950,891.84 × 7,542,974.08
  4. Step 4: Simplify right side
    8,690,892.80x = 90,145,267,382,003.50
  5. Step 5: Solve for x
    x = 90,145,267,382,003.50/8,690,892.80
  6. Step 6: Final answer
    x = 10,372,382.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.