Home / 80,622.20-111,227.62-51,939.70

Finding the Fourth Proportional to 80,622.20, 111,227.62 and 51,939.70

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Solution

The fourth proportional to 80,622.20, 111,227.62 and 51,939.70 is: 71,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,622.20 : 111,227.62 = 51,939.70 : x
  2. Step 2: Convert to fraction form
    80,622.20/111,227.62 = 51,939.70/x
  3. Step 3: Cross multiply
    80,622.20x = 111,227.62 × 51,939.70
  4. Step 4: Simplify right side
    80,622.20x = 5,777,129,214.51
  5. Step 5: Solve for x
    x = 5,777,129,214.51/80,622.20
  6. Step 6: Final answer
    x = 71,656.80

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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.