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Finding the Fourth Proportional to 50,872.32, 70,200 and 28,512

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Solution

The fourth proportional to 50,872.32, 70,200 and 28,512 is: 39,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,872.32 : 70,200 = 28,512 : x
  2. Step 2: Convert to fraction form
    50,872.32/70,200 = 28,512/x
  3. Step 3: Cross multiply
    50,872.32x = 70,200 × 28,512
  4. Step 4: Simplify right side
    50,872.32x = 2,001,542,400
  5. Step 5: Solve for x
    x = 2,001,542,400/50,872.32
  6. Step 6: Final answer
    x = 39,344.43

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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.