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Finding the Fourth Proportional to 71,993.75, 99,351.08 and 40,162.68

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Solution

The fourth proportional to 71,993.75, 99,351.08 and 40,162.68 is: 55,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,993.75 : 99,351.08 = 40,162.68 : x
  2. Step 2: Convert to fraction form
    71,993.75/99,351.08 = 40,162.68/x
  3. Step 3: Cross multiply
    71,993.75x = 99,351.08 × 40,162.68
  4. Step 4: Simplify right side
    71,993.75x = 3,990,205,432.88
  5. Step 5: Solve for x
    x = 3,990,205,432.88/71,993.75
  6. Step 6: Final answer
    x = 55,424.33

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1.5x scale

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.