Home / 68,132.10-102,212.73-28,707.78

Finding the Fourth Proportional to 68,132.10, 102,212.73 and 28,707.78

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Solution

The fourth proportional to 68,132.10, 102,212.73 and 28,707.78 is: 43,067.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,132.10 : 102,212.73 = 28,707.78 : x
  2. Step 2: Convert to fraction form
    68,132.10/102,212.73 = 28,707.78/x
  3. Step 3: Cross multiply
    68,132.10x = 102,212.73 × 28,707.78
  4. Step 4: Simplify right side
    68,132.10x = 2,934,300,566.04
  5. Step 5: Solve for x
    x = 2,934,300,566.04/68,132.10
  6. Step 6: Final answer
    x = 43,067.81

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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.