Home / 81,965.56-113,120.96-50,155.60

Finding the Fourth Proportional to 81,965.56, 113,120.96 and 50,155.60

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Solution

The fourth proportional to 81,965.56, 113,120.96 and 50,155.60 is: 69,219.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,965.56 : 113,120.96 = 50,155.60 : x
  2. Step 2: Convert to fraction form
    81,965.56/113,120.96 = 50,155.60/x
  3. Step 3: Cross multiply
    81,965.56x = 113,120.96 × 50,155.60
  4. Step 4: Simplify right side
    81,965.56x = 5,673,649,621.38
  5. Step 5: Solve for x
    x = 5,673,649,621.38/81,965.56
  6. Step 6: Final answer
    x = 69,219.92

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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.