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Finding the Fourth Proportional to 20,179,922.80, 28,188,119 and 20,179,922.80

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Solution

The fourth proportional to 20,179,922.80, 28,188,119 and 20,179,922.80 is: 28,188,119

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179,922.80 : 28,188,119 = 20,179,922.80 : x
  2. Step 2: Convert to fraction form
    20,179,922.80/28,188,119 = 20,179,922.80/x
  3. Step 3: Cross multiply
    20,179,922.80x = 28,188,119 × 20,179,922.80
  4. Step 4: Simplify right side
    20,179,922.80x = 568,834,065,297,213.25
  5. Step 5: Solve for x
    x = 568,834,065,297,213.25/20,179,922.80
  6. Step 6: Final answer
    x = 28,188,119

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.