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Finding the Fourth Proportional to 50,787.86, 76,190.63 and 21,226.46

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Solution

The fourth proportional to 50,787.86, 76,190.63 and 21,226.46 is: 31,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,787.86 : 76,190.63 = 21,226.46 : x
  2. Step 2: Convert to fraction form
    50,787.86/76,190.63 = 21,226.46/x
  3. Step 3: Cross multiply
    50,787.86x = 76,190.63 × 21,226.46
  4. Step 4: Simplify right side
    50,787.86x = 1,617,256,872.98
  5. Step 5: Solve for x
    x = 1,617,256,872.98/50,787.86
  6. Step 6: Final answer
    x = 31,843.38

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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.