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Finding the Fourth Proportional to 80,361.33, 120,550.10 and 21,201.09

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Solution

The fourth proportional to 80,361.33, 120,550.10 and 21,201.09 is: 31,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,361.33 : 120,550.10 = 21,201.09 : x
  2. Step 2: Convert to fraction form
    80,361.33/120,550.10 = 21,201.09/x
  3. Step 3: Cross multiply
    80,361.33x = 120,550.10 × 21,201.09
  4. Step 4: Simplify right side
    80,361.33x = 2,555,793,413.60
  5. Step 5: Solve for x
    x = 2,555,793,413.60/80,361.33
  6. Step 6: Final answer
    x = 31,803.77

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1.5x scale

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.