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Finding the Fourth Proportional to 50,910.76, 70,256.62 and 28,249.70

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Solution

The fourth proportional to 50,910.76, 70,256.62 and 28,249.70 is: 38,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,910.76 : 70,256.62 = 28,249.70 : x
  2. Step 2: Convert to fraction form
    50,910.76/70,256.62 = 28,249.70/x
  3. Step 3: Cross multiply
    50,910.76x = 70,256.62 × 28,249.70
  4. Step 4: Simplify right side
    50,910.76x = 1,984,728,122.04
  5. Step 5: Solve for x
    x = 1,984,728,122.04/50,910.76
  6. Step 6: Final answer
    x = 38,984.45

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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.