Home / 78,629.45-108,545.42-50,351.27

Finding the Fourth Proportional to 78,629.45, 108,545.42 and 50,351.27

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Solution

The fourth proportional to 78,629.45, 108,545.42 and 50,351.27 is: 69,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,629.45 : 108,545.42 = 50,351.27 : x
  2. Step 2: Convert to fraction form
    78,629.45/108,545.42 = 50,351.27/x
  3. Step 3: Cross multiply
    78,629.45x = 108,545.42 × 50,351.27
  4. Step 4: Simplify right side
    78,629.45x = 5,465,399,749.68
  5. Step 5: Solve for x
    x = 5,465,399,749.68/78,629.45
  6. Step 6: Final answer
    x = 69,508.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.