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Finding the Fourth Proportional to 49,947.20, 74,920.80 and 43,803.20

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Solution

The fourth proportional to 49,947.20, 74,920.80 and 43,803.20 is: 65,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,947.20 : 74,920.80 = 43,803.20 : x
  2. Step 2: Convert to fraction form
    49,947.20/74,920.80 = 43,803.20/x
  3. Step 3: Cross multiply
    49,947.20x = 74,920.80 × 43,803.20
  4. Step 4: Simplify right side
    49,947.20x = 3,281,770,786.56
  5. Step 5: Solve for x
    x = 3,281,770,786.56/49,947.20
  6. Step 6: Final answer
    x = 65,704.80

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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.