Home / 70,579.38-105,912.96-43,977.60

Finding the Fourth Proportional to 70,579.38, 105,912.96 and 43,977.60

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Solution

The fourth proportional to 70,579.38, 105,912.96 and 43,977.60 is: 65,993.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,579.38 : 105,912.96 = 43,977.60 : x
  2. Step 2: Convert to fraction form
    70,579.38/105,912.96 = 43,977.60/x
  3. Step 3: Cross multiply
    70,579.38x = 105,912.96 × 43,977.60
  4. Step 4: Simplify right side
    70,579.38x = 4,657,797,789.70
  5. Step 5: Solve for x
    x = 4,657,797,789.70/70,579.38
  6. Step 6: Final answer
    x = 65,993.75

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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.