Home / 71,942.88-99,277.54-40,105.63

Finding the Fourth Proportional to 71,942.88, 99,277.54 and 40,105.63

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Solution

The fourth proportional to 71,942.88, 99,277.54 and 40,105.63 is: 55,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,942.88 : 99,277.54 = 40,105.63 : x
  2. Step 2: Convert to fraction form
    71,942.88/99,277.54 = 40,105.63/x
  3. Step 3: Cross multiply
    71,942.88x = 99,277.54 × 40,105.63
  4. Step 4: Simplify right side
    71,942.88x = 3,981,588,286.55
  5. Step 5: Solve for x
    x = 3,981,588,286.55/71,942.88
  6. Step 6: Final answer
    x = 55,343.74

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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.