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Finding the Fourth Proportional to 73,451.80, 110,100.90 and 40,120.60

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Solution

The fourth proportional to 73,451.80, 110,100.90 and 40,120.60 is: 60,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,451.80 : 110,100.90 = 40,120.60 : x
  2. Step 2: Convert to fraction form
    73,451.80/110,100.90 = 40,120.60/x
  3. Step 3: Cross multiply
    73,451.80x = 110,100.90 × 40,120.60
  4. Step 4: Simplify right side
    73,451.80x = 4,417,314,168.54
  5. Step 5: Solve for x
    x = 4,417,314,168.54/73,451.80
  6. Step 6: Final answer
    x = 60,138.95

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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.