Home / 45,419.46-68,147.91-20,105.70

Finding the Fourth Proportional to 45,419.46, 68,147.91 and 20,105.70

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Solution

The fourth proportional to 45,419.46, 68,147.91 and 20,105.70 is: 30,166.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,419.46 : 68,147.91 = 20,105.70 : x
  2. Step 2: Convert to fraction form
    45,419.46/68,147.91 = 20,105.70/x
  3. Step 3: Cross multiply
    45,419.46x = 68,147.91 × 20,105.70
  4. Step 4: Simplify right side
    45,419.46x = 1,370,161,434.09
  5. Step 5: Solve for x
    x = 1,370,161,434.09/45,419.46
  6. Step 6: Final answer
    x = 30,166.84

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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.