Home / 90,439.87-135,641.33-34,260.61

Finding the Fourth Proportional to 90,439.87, 135,641.33 and 34,260.61

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Solution

The fourth proportional to 90,439.87, 135,641.33 and 34,260.61 is: 51,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,439.87 : 135,641.33 = 34,260.61 : x
  2. Step 2: Convert to fraction form
    90,439.87/135,641.33 = 34,260.61/x
  3. Step 3: Cross multiply
    90,439.87x = 135,641.33 × 34,260.61
  4. Step 4: Simplify right side
    90,439.87x = 4,647,153,857.50
  5. Step 5: Solve for x
    x = 4,647,153,857.50/90,439.87
  6. Step 6: Final answer
    x = 51,383.91

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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.