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Finding the Fourth Proportional to 79,961.54, 119,927.79 and 20,793.54

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Solution

The fourth proportional to 79,961.54, 119,927.79 and 20,793.54 is: 31,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,961.54 : 119,927.79 = 20,793.54 : x
  2. Step 2: Convert to fraction form
    79,961.54/119,927.79 = 20,793.54/x
  3. Step 3: Cross multiply
    79,961.54x = 119,927.79 × 20,793.54
  4. Step 4: Simplify right side
    79,961.54x = 2,493,723,298.48
  5. Step 5: Solve for x
    x = 2,493,723,298.48/79,961.54
  6. Step 6: Final answer
    x = 31,186.54

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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.