Home / 80,914.33-111,709.62-71,936.99

Finding the Fourth Proportional to 80,914.33, 111,709.62 and 71,936.99

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Solution

The fourth proportional to 80,914.33, 111,709.62 and 71,936.99 is: 99,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,914.33 : 111,709.62 = 71,936.99 : x
  2. Step 2: Convert to fraction form
    80,914.33/111,709.62 = 71,936.99/x
  3. Step 3: Cross multiply
    80,914.33x = 111,709.62 × 71,936.99
  4. Step 4: Simplify right side
    80,914.33x = 8,036,053,826.35
  5. Step 5: Solve for x
    x = 8,036,053,826.35/80,914.33
  6. Step 6: Final answer
    x = 99,315.58

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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.