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Finding the Fourth Proportional to 90,964.62, 125,530.86 and 50,676

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Solution

The fourth proportional to 90,964.62, 125,530.86 and 50,676 is: 69,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,964.62 : 125,530.86 = 50,676 : x
  2. Step 2: Convert to fraction form
    90,964.62/125,530.86 = 50,676/x
  3. Step 3: Cross multiply
    90,964.62x = 125,530.86 × 50,676
  4. Step 4: Simplify right side
    90,964.62x = 6,361,401,861.36
  5. Step 5: Solve for x
    x = 6,361,401,861.36/90,964.62
  6. Step 6: Final answer
    x = 69,932.70

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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.