Home / 80,622.70-111,228.30-51,940.20

Finding the Fourth Proportional to 80,622.70, 111,228.30 and 51,940.20

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Solution

The fourth proportional to 80,622.70, 111,228.30 and 51,940.20 is: 71,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,622.70 : 111,228.30 = 51,940.20 : x
  2. Step 2: Convert to fraction form
    80,622.70/111,228.30 = 51,940.20/x
  3. Step 3: Cross multiply
    80,622.70x = 111,228.30 × 51,940.20
  4. Step 4: Simplify right side
    80,622.70x = 5,777,220,147.66
  5. Step 5: Solve for x
    x = 5,777,220,147.66/80,622.70
  6. Step 6: Final answer
    x = 71,657.49

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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.