Home / 57,801.45-86,727.21-20,388.27

Finding the Fourth Proportional to 57,801.45, 86,727.21 and 20,388.27

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Solution

The fourth proportional to 57,801.45, 86,727.21 and 20,388.27 is: 30,591.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.45 : 86,727.21 = 20,388.27 : x
  2. Step 2: Convert to fraction form
    57,801.45/86,727.21 = 20,388.27/x
  3. Step 3: Cross multiply
    57,801.45x = 86,727.21 × 20,388.27
  4. Step 4: Simplify right side
    57,801.45x = 1,768,217,773.83
  5. Step 5: Solve for x
    x = 1,768,217,773.83/57,801.45
  6. Step 6: Final answer
    x = 30,591.24

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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.