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Finding the Fourth Proportional to 49,879.50, 74,819.25 and 18,692.88

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Solution

The fourth proportional to 49,879.50, 74,819.25 and 18,692.88 is: 28,039.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,879.50 : 74,819.25 = 18,692.88 : x
  2. Step 2: Convert to fraction form
    49,879.50/74,819.25 = 18,692.88/x
  3. Step 3: Cross multiply
    49,879.50x = 74,819.25 × 18,692.88
  4. Step 4: Simplify right side
    49,879.50x = 1,398,587,261.94
  5. Step 5: Solve for x
    x = 1,398,587,261.94/49,879.50
  6. Step 6: Final answer
    x = 28,039.32

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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.