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Finding the Fourth Proportional to 50,190.80, 69,255.64 and 28,676.80

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Solution

The fourth proportional to 50,190.80, 69,255.64 and 28,676.80 is: 39,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,190.80 : 69,255.64 = 28,676.80 : x
  2. Step 2: Convert to fraction form
    50,190.80/69,255.64 = 28,676.80/x
  3. Step 3: Cross multiply
    50,190.80x = 69,255.64 × 28,676.80
  4. Step 4: Simplify right side
    50,190.80x = 1,986,030,137.15
  5. Step 5: Solve for x
    x = 1,986,030,137.15/50,190.80
  6. Step 6: Final answer
    x = 39,569.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.