Home / 71,994.75-99,352.45-40,163.68

Finding the Fourth Proportional to 71,994.75, 99,352.45 and 40,163.68

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Solution

The fourth proportional to 71,994.75, 99,352.45 and 40,163.68 is: 55,425.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994.75 : 99,352.45 = 40,163.68 : x
  2. Step 2: Convert to fraction form
    71,994.75/99,352.45 = 40,163.68/x
  3. Step 3: Cross multiply
    71,994.75x = 99,352.45 × 40,163.68
  4. Step 4: Simplify right side
    71,994.75x = 3,990,360,009.02
  5. Step 5: Solve for x
    x = 3,990,360,009.02/71,994.75
  6. Step 6: Final answer
    x = 55,425.71

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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.