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Finding the Fourth Proportional to 80,211.60, 120,317.40 and 33,458.40

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Solution

The fourth proportional to 80,211.60, 120,317.40 and 33,458.40 is: 50,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.60 : 120,317.40 = 33,458.40 : x
  2. Step 2: Convert to fraction form
    80,211.60/120,317.40 = 33,458.40/x
  3. Step 3: Cross multiply
    80,211.60x = 120,317.40 × 33,458.40
  4. Step 4: Simplify right side
    80,211.60x = 4,025,627,696.16
  5. Step 5: Solve for x
    x = 4,025,627,696.16/80,211.60
  6. Step 6: Final answer
    x = 50,187.60

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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.