Home / 90,339.31-135,456.42-34,183.75

Finding the Fourth Proportional to 90,339.31, 135,456.42 and 34,183.75

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Solution

The fourth proportional to 90,339.31, 135,456.42 and 34,183.75 is: 51,255.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.31 : 135,456.42 = 34,183.75 : x
  2. Step 2: Convert to fraction form
    90,339.31/135,456.42 = 34,183.75/x
  3. Step 3: Cross multiply
    90,339.31x = 135,456.42 × 34,183.75
  4. Step 4: Simplify right side
    90,339.31x = 4,630,408,440.70
  5. Step 5: Solve for x
    x = 4,630,408,440.70/90,339.31
  6. Step 6: Final answer
    x = 51,255.75

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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.