Home / 90,679.11-125,134.67-50,391.86

Finding the Fourth Proportional to 90,679.11, 125,134.67 and 50,391.86

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Solution

The fourth proportional to 90,679.11, 125,134.67 and 50,391.86 is: 69,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679.11 : 125,134.67 = 50,391.86 : x
  2. Step 2: Convert to fraction form
    90,679.11/125,134.67 = 50,391.86/x
  3. Step 3: Cross multiply
    90,679.11x = 125,134.67 × 50,391.86
  4. Step 4: Simplify right side
    90,679.11x = 6,305,767,894.15
  5. Step 5: Solve for x
    x = 6,305,767,894.15/90,679.11
  6. Step 6: Final answer
    x = 69,539.37

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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.