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Finding the Fourth Proportional to 50,857.88, 70,191.14 and 28,201.91

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Solution

The fourth proportional to 50,857.88, 70,191.14 and 28,201.91 is: 38,922.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,857.88 : 70,191.14 = 28,201.91 : x
  2. Step 2: Convert to fraction form
    50,857.88/70,191.14 = 28,201.91/x
  3. Step 3: Cross multiply
    50,857.88x = 70,191.14 × 28,201.91
  4. Step 4: Simplify right side
    50,857.88x = 1,979,524,213.08
  5. Step 5: Solve for x
    x = 1,979,524,213.08/50,857.88
  6. Step 6: Final answer
    x = 38,922.66

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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.