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Finding the Fourth Proportional to 50,906.69, 70,250.17 and 28,245.20

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Solution

The fourth proportional to 50,906.69, 70,250.17 and 28,245.20 is: 38,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,906.69 : 70,250.17 = 28,245.20 : x
  2. Step 2: Convert to fraction form
    50,906.69/70,250.17 = 28,245.20/x
  3. Step 3: Cross multiply
    50,906.69x = 70,250.17 × 28,245.20
  4. Step 4: Simplify right side
    50,906.69x = 1,984,229,811.20
  5. Step 5: Solve for x
    x = 1,984,229,811.20/50,906.69
  6. Step 6: Final answer
    x = 38,977.78

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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.