Home / 90,344.57-135,538.38-31,180.75

Finding the Fourth Proportional to 90,344.57, 135,538.38 and 31,180.75

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Solution

The fourth proportional to 90,344.57, 135,538.38 and 31,180.75 is: 46,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,344.57 : 135,538.38 = 31,180.75 : x
  2. Step 2: Convert to fraction form
    90,344.57/135,538.38 = 31,180.75/x
  3. Step 3: Cross multiply
    90,344.57x = 135,538.38 × 31,180.75
  4. Step 4: Simplify right side
    90,344.57x = 4,226,188,003.34
  5. Step 5: Solve for x
    x = 4,226,188,003.34/90,344.57
  6. Step 6: Final answer
    x = 46,778.55

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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.