Home / 80,936.21-111,692.57-45,128.54

Finding the Fourth Proportional to 80,936.21, 111,692.57 and 45,128.54

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Solution

The fourth proportional to 80,936.21, 111,692.57 and 45,128.54 is: 62,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,936.21 : 111,692.57 = 45,128.54 : x
  2. Step 2: Convert to fraction form
    80,936.21/111,692.57 = 45,128.54/x
  3. Step 3: Cross multiply
    80,936.21x = 111,692.57 × 45,128.54
  4. Step 4: Simplify right side
    80,936.21x = 5,040,521,828.84
  5. Step 5: Solve for x
    x = 5,040,521,828.84/80,936.21
  6. Step 6: Final answer
    x = 62,277.71

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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.