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Finding the Fourth Proportional to 54,245.70, 81,372.60 and 19,180.80

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Solution

The fourth proportional to 54,245.70, 81,372.60 and 19,180.80 is: 28,772.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,245.70 : 81,372.60 = 19,180.80 : x
  2. Step 2: Convert to fraction form
    54,245.70/81,372.60 = 19,180.80/x
  3. Step 3: Cross multiply
    54,245.70x = 81,372.60 × 19,180.80
  4. Step 4: Simplify right side
    54,245.70x = 1,560,791,566.08
  5. Step 5: Solve for x
    x = 1,560,791,566.08/54,245.70
  6. Step 6: Final answer
    x = 28,772.63

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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.