Home / 90,456.92-135,697.73-31,276.70

Finding the Fourth Proportional to 90,456.92, 135,697.73 and 31,276.70

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Solution

The fourth proportional to 90,456.92, 135,697.73 and 31,276.70 is: 46,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,456.92 : 135,697.73 = 31,276.70 : x
  2. Step 2: Convert to fraction form
    90,456.92/135,697.73 = 31,276.70/x
  3. Step 3: Cross multiply
    90,456.92x = 135,697.73 × 31,276.70
  4. Step 4: Simplify right side
    90,456.92x = 4,244,176,357.02
  5. Step 5: Solve for x
    x = 4,244,176,357.02/90,456.92
  6. Step 6: Final answer
    x = 46,919.31

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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.