Home / 90,324.72-135,464.40-40,376.88

Finding the Fourth Proportional to 90,324.72, 135,464.40 and 40,376.88

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Solution

The fourth proportional to 90,324.72, 135,464.40 and 40,376.88 is: 60,555.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,324.72 : 135,464.40 = 40,376.88 : x
  2. Step 2: Convert to fraction form
    90,324.72/135,464.40 = 40,376.88/x
  3. Step 3: Cross multiply
    90,324.72x = 135,464.40 × 40,376.88
  4. Step 4: Simplify right side
    90,324.72x = 5,469,629,823.07
  5. Step 5: Solve for x
    x = 5,469,629,823.07/90,324.72
  6. Step 6: Final answer
    x = 60,555.18

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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.