Home / 57,400.38-86,109.21-20,461.50

Finding the Fourth Proportional to 57,400.38, 86,109.21 and 20,461.50

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Solution

The fourth proportional to 57,400.38, 86,109.21 and 20,461.50 is: 30,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400.38 : 86,109.21 = 20,461.50 : x
  2. Step 2: Convert to fraction form
    57,400.38/86,109.21 = 20,461.50/x
  3. Step 3: Cross multiply
    57,400.38x = 86,109.21 × 20,461.50
  4. Step 4: Simplify right side
    57,400.38x = 1,761,923,600.42
  5. Step 5: Solve for x
    x = 1,761,923,600.42/57,400.38
  6. Step 6: Final answer
    x = 30,695.33

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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.