Home / 70,720.03-106,065.11-20,786.55

Finding the Fourth Proportional to 70,720.03, 106,065.11 and 20,786.55

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Solution

The fourth proportional to 70,720.03, 106,065.11 and 20,786.55 is: 31,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,720.03 : 106,065.11 = 20,786.55 : x
  2. Step 2: Convert to fraction form
    70,720.03/106,065.11 = 20,786.55/x
  3. Step 3: Cross multiply
    70,720.03x = 106,065.11 × 20,786.55
  4. Step 4: Simplify right side
    70,720.03x = 2,204,727,078.01
  5. Step 5: Solve for x
    x = 2,204,727,078.01/70,720.03
  6. Step 6: Final answer
    x = 31,175.43

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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.