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Finding the Fourth Proportional to 72,880.78, 109,074.25 and 44,818.60

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Solution

The fourth proportional to 72,880.78, 109,074.25 and 44,818.60 is: 67,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,880.78 : 109,074.25 = 44,818.60 : x
  2. Step 2: Convert to fraction form
    72,880.78/109,074.25 = 44,818.60/x
  3. Step 3: Cross multiply
    72,880.78x = 109,074.25 × 44,818.60
  4. Step 4: Simplify right side
    72,880.78x = 4,888,555,181.05
  5. Step 5: Solve for x
    x = 4,888,555,181.05/72,880.78
  6. Step 6: Final answer
    x = 67,076.05

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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.