Home / 90,517.82-135,778.26-31,355.24

Finding the Fourth Proportional to 90,517.82, 135,778.26 and 31,355.24

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Solution

The fourth proportional to 90,517.82, 135,778.26 and 31,355.24 is: 47,033.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,517.82 : 135,778.26 = 31,355.24 : x
  2. Step 2: Convert to fraction form
    90,517.82/135,778.26 = 31,355.24/x
  3. Step 3: Cross multiply
    90,517.82x = 135,778.26 × 31,355.24
  4. Step 4: Simplify right side
    90,517.82x = 4,257,359,929.08
  5. Step 5: Solve for x
    x = 4,257,359,929.08/90,517.82
  6. Step 6: Final answer
    x = 47,033.39

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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.