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Finding the Fourth Proportional to 50,571, 69,787.98 and 28,215

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Solution

The fourth proportional to 50,571, 69,787.98 and 28,215 is: 38,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,571 : 69,787.98 = 28,215 : x
  2. Step 2: Convert to fraction form
    50,571/69,787.98 = 28,215/x
  3. Step 3: Cross multiply
    50,571x = 69,787.98 × 28,215
  4. Step 4: Simplify right side
    50,571x = 1,969,067,855.70
  5. Step 5: Solve for x
    x = 1,969,067,855.70/50,571
  6. Step 6: Final answer
    x = 38,936.70

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1.5x scale

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.