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Finding the Fourth Proportional to 78,441.73, 108,251.97 and 48,244.79

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Solution

The fourth proportional to 78,441.73, 108,251.97 and 48,244.79 is: 66,579.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,441.73 : 108,251.97 = 48,244.79 : x
  2. Step 2: Convert to fraction form
    78,441.73/108,251.97 = 48,244.79/x
  3. Step 3: Cross multiply
    78,441.73x = 108,251.97 × 48,244.79
  4. Step 4: Simplify right side
    78,441.73x = 5,222,593,559.74
  5. Step 5: Solve for x
    x = 5,222,593,559.74/78,441.73
  6. Step 6: Final answer
    x = 66,579.28

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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.