Home / 57,209.28-85,761.36-19,760.64

Finding the Fourth Proportional to 57,209.28, 85,761.36 and 19,760.64

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Solution

The fourth proportional to 57,209.28, 85,761.36 and 19,760.64 is: 29,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,209.28 : 85,761.36 = 19,760.64 : x
  2. Step 2: Convert to fraction form
    57,209.28/85,761.36 = 19,760.64/x
  3. Step 3: Cross multiply
    57,209.28x = 85,761.36 × 19,760.64
  4. Step 4: Simplify right side
    57,209.28x = 1,694,699,360.87
  5. Step 5: Solve for x
    x = 1,694,699,360.87/57,209.28
  6. Step 6: Final answer
    x = 29,622.81

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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.