Home / 90,440.87-135,642.83-34,261.61

Finding the Fourth Proportional to 90,440.87, 135,642.83 and 34,261.61

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Solution

The fourth proportional to 90,440.87, 135,642.83 and 34,261.61 is: 51,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,440.87 : 135,642.83 = 34,261.61 : x
  2. Step 2: Convert to fraction form
    90,440.87/135,642.83 = 34,261.61/x
  3. Step 3: Cross multiply
    90,440.87x = 135,642.83 × 34,261.61
  4. Step 4: Simplify right side
    90,440.87x = 4,647,340,891.23
  5. Step 5: Solve for x
    x = 4,647,340,891.23/90,440.87
  6. Step 6: Final answer
    x = 51,385.41

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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.