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Finding the Fourth Proportional to 57,456.81, 86,163.89 and 20,007.27

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Solution

The fourth proportional to 57,456.81, 86,163.89 and 20,007.27 is: 30,003.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,456.81 : 86,163.89 = 20,007.27 : x
  2. Step 2: Convert to fraction form
    57,456.81/86,163.89 = 20,007.27/x
  3. Step 3: Cross multiply
    57,456.81x = 86,163.89 × 20,007.27
  4. Step 4: Simplify right side
    57,456.81x = 1,723,904,111.44
  5. Step 5: Solve for x
    x = 1,723,904,111.44/57,456.81
  6. Step 6: Final answer
    x = 30,003.48

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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.