Home / 80,623.20-111,228.99-51,940.70

Finding the Fourth Proportional to 80,623.20, 111,228.99 and 51,940.70

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Solution

The fourth proportional to 80,623.20, 111,228.99 and 51,940.70 is: 71,658.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,623.20 : 111,228.99 = 51,940.70 : x
  2. Step 2: Convert to fraction form
    80,623.20/111,228.99 = 51,940.70/x
  3. Step 3: Cross multiply
    80,623.20x = 111,228.99 × 51,940.70
  4. Step 4: Simplify right side
    80,623.20x = 5,777,311,044.75
  5. Step 5: Solve for x
    x = 5,777,311,044.75/80,623.20
  6. Step 6: Final answer
    x = 71,658.17

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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.