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Finding the Fourth Proportional to 80,423.70, 110,912.04 and 50,211.78

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Solution

The fourth proportional to 80,423.70, 110,912.04 and 50,211.78 is: 69,246.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,423.70 : 110,912.04 = 50,211.78 : x
  2. Step 2: Convert to fraction form
    80,423.70/110,912.04 = 50,211.78/x
  3. Step 3: Cross multiply
    80,423.70x = 110,912.04 × 50,211.78
  4. Step 4: Simplify right side
    80,423.70x = 5,569,090,951.83
  5. Step 5: Solve for x
    x = 5,569,090,951.83/80,423.70
  6. Step 6: Final answer
    x = 69,246.89

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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.