Home / 91,129.28-125,764-50,843.12

Finding the Fourth Proportional to 91,129.28, 125,764 and 50,843.12

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Solution

The fourth proportional to 91,129.28, 125,764 and 50,843.12 is: 70,166.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.28 : 125,764 = 50,843.12 : x
  2. Step 2: Convert to fraction form
    91,129.28/125,764 = 50,843.12/x
  3. Step 3: Cross multiply
    91,129.28x = 125,764 × 50,843.12
  4. Step 4: Simplify right side
    91,129.28x = 6,394,234,143.68
  5. Step 5: Solve for x
    x = 6,394,234,143.68/91,129.28
  6. Step 6: Final answer
    x = 70,166.63

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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.