Home / 80,135.72-110,621.33-49,935.95

Finding the Fourth Proportional to 80,135.72, 110,621.33 and 49,935.95

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Solution

The fourth proportional to 80,135.72, 110,621.33 and 49,935.95 is: 68,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,135.72 : 110,621.33 = 49,935.95 : x
  2. Step 2: Convert to fraction form
    80,135.72/110,621.33 = 49,935.95/x
  3. Step 3: Cross multiply
    80,135.72x = 110,621.33 × 49,935.95
  4. Step 4: Simplify right side
    80,135.72x = 5,523,981,203.81
  5. Step 5: Solve for x
    x = 5,523,981,203.81/80,135.72
  6. Step 6: Final answer
    x = 68,932.82

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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.