Home / 68,179.20-102,212.88-30,728.04

Finding the Fourth Proportional to 68,179.20, 102,212.88 and 30,728.04

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Solution

The fourth proportional to 68,179.20, 102,212.88 and 30,728.04 is: 46,066.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,179.20 : 102,212.88 = 30,728.04 : x
  2. Step 2: Convert to fraction form
    68,179.20/102,212.88 = 30,728.04/x
  3. Step 3: Cross multiply
    68,179.20x = 102,212.88 × 30,728.04
  4. Step 4: Simplify right side
    68,179.20x = 3,140,801,465.16
  5. Step 5: Solve for x
    x = 3,140,801,465.16/68,179.20
  6. Step 6: Final answer
    x = 46,066.86

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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.