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Finding the Fourth Proportional to 80,211.54, 120,435.59 and 44,742.16

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Solution

The fourth proportional to 80,211.54, 120,435.59 and 44,742.16 is: 67,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.54 : 120,435.59 = 44,742.16 : x
  2. Step 2: Convert to fraction form
    80,211.54/120,435.59 = 44,742.16/x
  3. Step 3: Cross multiply
    80,211.54x = 120,435.59 × 44,742.16
  4. Step 4: Simplify right side
    80,211.54x = 5,388,548,699.87
  5. Step 5: Solve for x
    x = 5,388,548,699.87/80,211.54
  6. Step 6: Final answer
    x = 67,179.22

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1.5x scale

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.