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Finding the Fourth Proportional to 72,115.69, 108,121.69 and 32,652.49

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Solution

The fourth proportional to 72,115.69, 108,121.69 and 32,652.49 is: 48,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.69 : 108,121.69 = 32,652.49 : x
  2. Step 2: Convert to fraction form
    72,115.69/108,121.69 = 32,652.49/x
  3. Step 3: Cross multiply
    72,115.69x = 108,121.69 × 32,652.49
  4. Step 4: Simplify right side
    72,115.69x = 3,530,442,401.51
  5. Step 5: Solve for x
    x = 3,530,442,401.51/72,115.69
  6. Step 6: Final answer
    x = 48,955.26

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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.