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Finding the Fourth Proportional to 90,734.75, 125,213.96 and 50,990.75

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Solution

The fourth proportional to 90,734.75, 125,213.96 and 50,990.75 is: 70,367.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,734.75 : 125,213.96 = 50,990.75 : x
  2. Step 2: Convert to fraction form
    90,734.75/125,213.96 = 50,990.75/x
  3. Step 3: Cross multiply
    90,734.75x = 125,213.96 × 50,990.75
  4. Step 4: Simplify right side
    90,734.75x = 6,384,753,475.92
  5. Step 5: Solve for x
    x = 6,384,753,475.92/90,734.75
  6. Step 6: Final answer
    x = 70,367.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.