Home / 68,890.12-103,336.38-18,969.96

Finding the Fourth Proportional to 68,890.12, 103,336.38 and 18,969.96

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Solution

The fourth proportional to 68,890.12, 103,336.38 and 18,969.96 is: 28,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,890.12 : 103,336.38 = 18,969.96 : x
  2. Step 2: Convert to fraction form
    68,890.12/103,336.38 = 18,969.96/x
  3. Step 3: Cross multiply
    68,890.12x = 103,336.38 × 18,969.96
  4. Step 4: Simplify right side
    68,890.12x = 1,960,286,995.14
  5. Step 5: Solve for x
    x = 1,960,286,995.14/68,890.12
  6. Step 6: Final answer
    x = 28,455.27

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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.