Home / 80,282.27-120,440.32-30,361.26

Finding the Fourth Proportional to 80,282.27, 120,440.32 and 30,361.26

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Solution

The fourth proportional to 80,282.27, 120,440.32 and 30,361.26 is: 45,548.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,282.27 : 120,440.32 = 30,361.26 : x
  2. Step 2: Convert to fraction form
    80,282.27/120,440.32 = 30,361.26/x
  3. Step 3: Cross multiply
    80,282.27x = 120,440.32 × 30,361.26
  4. Step 4: Simplify right side
    80,282.27x = 3,656,720,245.75
  5. Step 5: Solve for x
    x = 3,656,720,245.75/80,282.27
  6. Step 6: Final answer
    x = 45,548.29

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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.