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Finding the Fourth Proportional to 80,647.95, 111,300.41 and 48,383.79

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Solution

The fourth proportional to 80,647.95, 111,300.41 and 48,383.79 is: 66,773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,647.95 : 111,300.41 = 48,383.79 : x
  2. Step 2: Convert to fraction form
    80,647.95/111,300.41 = 48,383.79/x
  3. Step 3: Cross multiply
    80,647.95x = 111,300.41 × 48,383.79
  4. Step 4: Simplify right side
    80,647.95x = 5,385,135,664.35
  5. Step 5: Solve for x
    x = 5,385,135,664.35/80,647.95
  6. Step 6: Final answer
    x = 66,773.37

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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.