Home / 80,986.62-111,761.70-45,175.71

Finding the Fourth Proportional to 80,986.62, 111,761.70 and 45,175.71

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Solution

The fourth proportional to 80,986.62, 111,761.70 and 45,175.71 is: 62,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.62 : 111,761.70 = 45,175.71 : x
  2. Step 2: Convert to fraction form
    80,986.62/111,761.70 = 45,175.71/x
  3. Step 3: Cross multiply
    80,986.62x = 111,761.70 × 45,175.71
  4. Step 4: Simplify right side
    80,986.62x = 5,048,914,148.31
  5. Step 5: Solve for x
    x = 5,048,914,148.31/80,986.62
  6. Step 6: Final answer
    x = 62,342.57

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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.