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Finding the Fourth Proportional to 40,007.70, 60,049.22 and 20,300.40

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Solution

The fourth proportional to 40,007.70, 60,049.22 and 20,300.40 is: 30,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,007.70 : 60,049.22 = 20,300.40 : x
  2. Step 2: Convert to fraction form
    40,007.70/60,049.22 = 20,300.40/x
  3. Step 3: Cross multiply
    40,007.70x = 60,049.22 × 20,300.40
  4. Step 4: Simplify right side
    40,007.70x = 1,219,023,185.69
  5. Step 5: Solve for x
    x = 1,219,023,185.69/40,007.70
  6. Step 6: Final answer
    x = 30,469.71

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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.