Home / 72,740.45-109,110.69-20,149.97

Finding the Fourth Proportional to 72,740.45, 109,110.69 and 20,149.97

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Solution

The fourth proportional to 72,740.45, 109,110.69 and 20,149.97 is: 30,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.45 : 109,110.69 = 20,149.97 : x
  2. Step 2: Convert to fraction form
    72,740.45/109,110.69 = 20,149.97/x
  3. Step 3: Cross multiply
    72,740.45x = 109,110.69 × 20,149.97
  4. Step 4: Simplify right side
    72,740.45x = 2,198,576,584.63
  5. Step 5: Solve for x
    x = 2,198,576,584.63/72,740.45
  6. Step 6: Final answer
    x = 30,224.95

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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.