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Finding the Fourth Proportional to 72,074.26, 108,121.72 and 22,158.54

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Solution

The fourth proportional to 72,074.26, 108,121.72 and 22,158.54 is: 33,240.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,074.26 : 108,121.72 = 22,158.54 : x
  2. Step 2: Convert to fraction form
    72,074.26/108,121.72 = 22,158.54/x
  3. Step 3: Cross multiply
    72,074.26x = 108,121.72 × 22,158.54
  4. Step 4: Simplify right side
    72,074.26x = 2,395,819,457.49
  5. Step 5: Solve for x
    x = 2,395,819,457.49/72,074.26
  6. Step 6: Final answer
    x = 33,240.99

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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.