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Finding the Fourth Proportional to 80,423.48, 110,911.74 and 50,211.56

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Solution

The fourth proportional to 80,423.48, 110,911.74 and 50,211.56 is: 69,246.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,423.48 : 110,911.74 = 50,211.56 : x
  2. Step 2: Convert to fraction form
    80,423.48/110,911.74 = 50,211.56/x
  3. Step 3: Cross multiply
    80,423.48x = 110,911.74 × 50,211.56
  4. Step 4: Simplify right side
    80,423.48x = 5,569,051,487.71
  5. Step 5: Solve for x
    x = 5,569,051,487.71/80,423.48
  6. Step 6: Final answer
    x = 69,246.59

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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.