Home / 50,771.20-76,135.20-21,179.20

Finding the Fourth Proportional to 50,771.20, 76,135.20 and 21,179.20

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Solution

The fourth proportional to 50,771.20, 76,135.20 and 21,179.20 is: 31,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,771.20 : 76,135.20 = 21,179.20 : x
  2. Step 2: Convert to fraction form
    50,771.20/76,135.20 = 21,179.20/x
  3. Step 3: Cross multiply
    50,771.20x = 76,135.20 × 21,179.20
  4. Step 4: Simplify right side
    50,771.20x = 1,612,482,627.84
  5. Step 5: Solve for x
    x = 1,612,482,627.84/50,771.20
  6. Step 6: Final answer
    x = 31,759.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.