Home / 57,361.20-86,027.40-20,416.56

Finding the Fourth Proportional to 57,361.20, 86,027.40 and 20,416.56

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Solution

The fourth proportional to 57,361.20, 86,027.40 and 20,416.56 is: 30,619.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.20 : 86,027.40 = 20,416.56 : x
  2. Step 2: Convert to fraction form
    57,361.20/86,027.40 = 20,416.56/x
  3. Step 3: Cross multiply
    57,361.20x = 86,027.40 × 20,416.56
  4. Step 4: Simplify right side
    57,361.20x = 1,756,383,573.74
  5. Step 5: Solve for x
    x = 1,756,383,573.74/57,361.20
  6. Step 6: Final answer
    x = 30,619.71

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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.