Home / 68,795.38-103,186.15-18,880.49

Finding the Fourth Proportional to 68,795.38, 103,186.15 and 18,880.49

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Solution

The fourth proportional to 68,795.38, 103,186.15 and 18,880.49 is: 28,318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,795.38 : 103,186.15 = 18,880.49 : x
  2. Step 2: Convert to fraction form
    68,795.38/103,186.15 = 18,880.49/x
  3. Step 3: Cross multiply
    68,795.38x = 103,186.15 × 18,880.49
  4. Step 4: Simplify right side
    68,795.38x = 1,948,205,073.21
  5. Step 5: Solve for x
    x = 1,948,205,073.21/68,795.38
  6. Step 6: Final answer
    x = 28,318.84

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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.