Home / 45,581.81-68,352.66-20,620.85

Finding the Fourth Proportional to 45,581.81, 68,352.66 and 20,620.85

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Solution

The fourth proportional to 45,581.81, 68,352.66 and 20,620.85 is: 30,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,581.81 : 68,352.66 = 20,620.85 : x
  2. Step 2: Convert to fraction form
    45,581.81/68,352.66 = 20,620.85/x
  3. Step 3: Cross multiply
    45,581.81x = 68,352.66 × 20,620.85
  4. Step 4: Simplify right side
    45,581.81x = 1,409,489,607.20
  5. Step 5: Solve for x
    x = 1,409,489,607.20/45,581.81
  6. Step 6: Final answer
    x = 30,922.20

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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.