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Finding the Fourth Proportional to 92,579.85, 127,759.90 and 50,138.37

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Solution

The fourth proportional to 92,579.85, 127,759.90 and 50,138.37 is: 69,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,579.85 : 127,759.90 = 50,138.37 : x
  2. Step 2: Convert to fraction form
    92,579.85/127,759.90 = 50,138.37/x
  3. Step 3: Cross multiply
    92,579.85x = 127,759.90 × 50,138.37
  4. Step 4: Simplify right side
    92,579.85x = 6,405,673,137.36
  5. Step 5: Solve for x
    x = 6,405,673,137.36/92,579.85
  6. Step 6: Final answer
    x = 69,190.79

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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.