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Finding the Fourth Proportional to 71,481.45, 107,187.54 and 21,552.24

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Solution

The fourth proportional to 71,481.45, 107,187.54 and 21,552.24 is: 32,317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,481.45 : 107,187.54 = 21,552.24 : x
  2. Step 2: Convert to fraction form
    71,481.45/107,187.54 = 21,552.24/x
  3. Step 3: Cross multiply
    71,481.45x = 107,187.54 × 21,552.24
  4. Step 4: Simplify right side
    71,481.45x = 2,310,131,587.09
  5. Step 5: Solve for x
    x = 2,310,131,587.09/71,481.45
  6. Step 6: Final answer
    x = 32,317.92

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1.5x scale

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.