Home / 72,006.56-108,103.39-55,378.37

Finding the Fourth Proportional to 72,006.56, 108,103.39 and 55,378.37

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Solution

The fourth proportional to 72,006.56, 108,103.39 and 55,378.37 is: 83,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,006.56 : 108,103.39 = 55,378.37 : x
  2. Step 2: Convert to fraction form
    72,006.56/108,103.39 = 55,378.37/x
  3. Step 3: Cross multiply
    72,006.56x = 108,103.39 × 55,378.37
  4. Step 4: Simplify right side
    72,006.56x = 5,986,589,661.49
  5. Step 5: Solve for x
    x = 5,986,589,661.49/72,006.56
  6. Step 6: Final answer
    x = 83,139.51

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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.