Home / 68,605.32-102,906.78-18,684.60

Finding the Fourth Proportional to 68,605.32, 102,906.78 and 18,684.60

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Solution

The fourth proportional to 68,605.32, 102,906.78 and 18,684.60 is: 28,026.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,605.32 : 102,906.78 = 18,684.60 : x
  2. Step 2: Convert to fraction form
    68,605.32/102,906.78 = 18,684.60/x
  3. Step 3: Cross multiply
    68,605.32x = 102,906.78 × 18,684.60
  4. Step 4: Simplify right side
    68,605.32x = 1,922,772,021.59
  5. Step 5: Solve for x
    x = 1,922,772,021.59/68,605.32
  6. Step 6: Final answer
    x = 28,026.57

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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.