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Finding the Fourth Proportional to 53,912.80, 80,847.60 and 18,834.40

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Solution

The fourth proportional to 53,912.80, 80,847.60 and 18,834.40 is: 28,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,912.80 : 80,847.60 = 18,834.40 : x
  2. Step 2: Convert to fraction form
    53,912.80/80,847.60 = 18,834.40/x
  3. Step 3: Cross multiply
    53,912.80x = 80,847.60 × 18,834.40
  4. Step 4: Simplify right side
    53,912.80x = 1,522,716,037.44
  5. Step 5: Solve for x
    x = 1,522,716,037.44/53,912.80
  6. Step 6: Final answer
    x = 28,244.05

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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.