Home / 90,675.87-125,135.85-50,391.33

Finding the Fourth Proportional to 90,675.87, 125,135.85 and 50,391.33

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Solution

The fourth proportional to 90,675.87, 125,135.85 and 50,391.33 is: 69,541.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675.87 : 125,135.85 = 50,391.33 : x
  2. Step 2: Convert to fraction form
    90,675.87/125,135.85 = 50,391.33/x
  3. Step 3: Cross multiply
    90,675.87x = 125,135.85 × 50,391.33
  4. Step 4: Simplify right side
    90,675.87x = 6,305,761,912.18
  5. Step 5: Solve for x
    x = 6,305,761,912.18/90,675.87
  6. Step 6: Final answer
    x = 69,541.79

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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.