Home / 80,905.91-111,647.57-50,707.53

Finding the Fourth Proportional to 80,905.91, 111,647.57 and 50,707.53

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Solution

The fourth proportional to 80,905.91, 111,647.57 and 50,707.53 is: 69,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,905.91 : 111,647.57 = 50,707.53 : x
  2. Step 2: Convert to fraction form
    80,905.91/111,647.57 = 50,707.53/x
  3. Step 3: Cross multiply
    80,905.91x = 111,647.57 × 50,707.53
  4. Step 4: Simplify right side
    80,905.91x = 5,661,372,251.66
  5. Step 5: Solve for x
    x = 5,661,372,251.66/80,905.91
  6. Step 6: Final answer
    x = 69,974.77

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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.