Home / 80,621.20-111,226.24-51,938.70

Finding the Fourth Proportional to 80,621.20, 111,226.24 and 51,938.70

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Solution

The fourth proportional to 80,621.20, 111,226.24 and 51,938.70 is: 71,655.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,621.20 : 111,226.24 = 51,938.70 : x
  2. Step 2: Convert to fraction form
    80,621.20/111,226.24 = 51,938.70/x
  3. Step 3: Cross multiply
    80,621.20x = 111,226.24 × 51,938.70
  4. Step 4: Simplify right side
    80,621.20x = 5,776,946,311.49
  5. Step 5: Solve for x
    x = 5,776,946,311.49/80,621.20
  6. Step 6: Final answer
    x = 71,655.42

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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.