Home / 55,129.88-82,629.20-38,399.32

Finding the Fourth Proportional to 55,129.88, 82,629.20 and 38,399.32

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Solution

The fourth proportional to 55,129.88, 82,629.20 and 38,399.32 is: 57,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.88 : 82,629.20 = 38,399.32 : x
  2. Step 2: Convert to fraction form
    55,129.88/82,629.20 = 38,399.32/x
  3. Step 3: Cross multiply
    55,129.88x = 82,629.20 × 38,399.32
  4. Step 4: Simplify right side
    55,129.88x = 3,172,905,092.14
  5. Step 5: Solve for x
    x = 3,172,905,092.14/55,129.88
  6. Step 6: Final answer
    x = 57,553.27

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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.