Home / 76,571.12-114,847.56-20,415.44

Finding the Fourth Proportional to 76,571.12, 114,847.56 and 20,415.44

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Solution

The fourth proportional to 76,571.12, 114,847.56 and 20,415.44 is: 30,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,571.12 : 114,847.56 = 20,415.44 : x
  2. Step 2: Convert to fraction form
    76,571.12/114,847.56 = 20,415.44/x
  3. Step 3: Cross multiply
    76,571.12x = 114,847.56 × 20,415.44
  4. Step 4: Simplify right side
    76,571.12x = 2,344,663,470.33
  5. Step 5: Solve for x
    x = 2,344,663,470.33/76,571.12
  6. Step 6: Final answer
    x = 30,620.73

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1.5x scale

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.