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Finding the Fourth Proportional to 73,680, 110,630.72 and 44,229.60

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Solution

The fourth proportional to 73,680, 110,630.72 and 44,229.60 is: 66,410.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,680 : 110,630.72 = 44,229.60 : x
  2. Step 2: Convert to fraction form
    73,680/110,630.72 = 44,229.60/x
  3. Step 3: Cross multiply
    73,680x = 110,630.72 × 44,229.60
  4. Step 4: Simplify right side
    73,680x = 4,893,152,493.31
  5. Step 5: Solve for x
    x = 4,893,152,493.31/73,680
  6. Step 6: Final answer
    x = 66,410.86

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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.