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Finding the Fourth Proportional to 49,620.88, 68,478.02 and 28,406.96

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Solution

The fourth proportional to 49,620.88, 68,478.02 and 28,406.96 is: 39,202.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,620.88 : 68,478.02 = 28,406.96 : x
  2. Step 2: Convert to fraction form
    49,620.88/68,478.02 = 28,406.96/x
  3. Step 3: Cross multiply
    49,620.88x = 68,478.02 × 28,406.96
  4. Step 4: Simplify right side
    49,620.88x = 1,945,252,375.02
  5. Step 5: Solve for x
    x = 1,945,252,375.02/49,620.88
  6. Step 6: Final answer
    x = 39,202.29

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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.