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Finding the Fourth Proportional to 50,793.78, 76,189.86 and 13,857.78

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Solution

The fourth proportional to 50,793.78, 76,189.86 and 13,857.78 is: 20,786.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,793.78 : 76,189.86 = 13,857.78 : x
  2. Step 2: Convert to fraction form
    50,793.78/76,189.86 = 13,857.78/x
  3. Step 3: Cross multiply
    50,793.78x = 76,189.86 × 13,857.78
  4. Step 4: Simplify right side
    50,793.78x = 1,055,822,318.11
  5. Step 5: Solve for x
    x = 1,055,822,318.11/50,793.78
  6. Step 6: Final answer
    x = 20,786.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.