Home / 90,400.65-135,589.42-23,845.78

Finding the Fourth Proportional to 90,400.65, 135,589.42 and 23,845.78

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Solution

The fourth proportional to 90,400.65, 135,589.42 and 23,845.78 is: 35,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.65 : 135,589.42 = 23,845.78 : x
  2. Step 2: Convert to fraction form
    90,400.65/135,589.42 = 23,845.78/x
  3. Step 3: Cross multiply
    90,400.65x = 135,589.42 × 23,845.78
  4. Step 4: Simplify right side
    90,400.65x = 3,233,235,479.65
  5. Step 5: Solve for x
    x = 3,233,235,479.65/90,400.65
  6. Step 6: Final answer
    x = 35,765.62

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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.