Home / 80,981.09-111,704.91-52,255.79

Finding the Fourth Proportional to 80,981.09, 111,704.91 and 52,255.79

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Solution

The fourth proportional to 80,981.09, 111,704.91 and 52,255.79 is: 72,081.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.09 : 111,704.91 = 52,255.79 : x
  2. Step 2: Convert to fraction form
    80,981.09/111,704.91 = 52,255.79/x
  3. Step 3: Cross multiply
    80,981.09x = 111,704.91 × 52,255.79
  4. Step 4: Simplify right side
    80,981.09x = 5,837,228,318.93
  5. Step 5: Solve for x
    x = 5,837,228,318.93/80,981.09
  6. Step 6: Final answer
    x = 72,081.38

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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.