Home / 68,942.10-95,137.66-42,129.48

Finding the Fourth Proportional to 68,942.10, 95,137.66 and 42,129.48

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Solution

The fourth proportional to 68,942.10, 95,137.66 and 42,129.48 is: 58,137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,942.10 : 95,137.66 = 42,129.48 : x
  2. Step 2: Convert to fraction form
    68,942.10/95,137.66 = 42,129.48/x
  3. Step 3: Cross multiply
    68,942.10x = 95,137.66 × 42,129.48
  4. Step 4: Simplify right side
    68,942.10x = 4,008,100,144.22
  5. Step 5: Solve for x
    x = 4,008,100,144.22/68,942.10
  6. Step 6: Final answer
    x = 58,137.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.