Home / 77,715.91-116,561.44-27,786.70

Finding the Fourth Proportional to 77,715.91, 116,561.44 and 27,786.70

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Solution

The fourth proportional to 77,715.91, 116,561.44 and 27,786.70 is: 41,675.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,715.91 : 116,561.44 = 27,786.70 : x
  2. Step 2: Convert to fraction form
    77,715.91/116,561.44 = 27,786.70/x
  3. Step 3: Cross multiply
    77,715.91x = 116,561.44 × 27,786.70
  4. Step 4: Simplify right side
    77,715.91x = 3,238,857,764.85
  5. Step 5: Solve for x
    x = 3,238,857,764.85/77,715.91
  6. Step 6: Final answer
    x = 41,675.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.