Home / 68,892.12-103,339.38-18,971.96

Finding the Fourth Proportional to 68,892.12, 103,339.38 and 18,971.96

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Solution

The fourth proportional to 68,892.12, 103,339.38 and 18,971.96 is: 28,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,892.12 : 103,339.38 = 18,971.96 : x
  2. Step 2: Convert to fraction form
    68,892.12/103,339.38 = 18,971.96/x
  3. Step 3: Cross multiply
    68,892.12x = 103,339.38 × 18,971.96
  4. Step 4: Simplify right side
    68,892.12x = 1,960,550,583.78
  5. Step 5: Solve for x
    x = 1,960,550,583.78/68,892.12
  6. Step 6: Final answer
    x = 28,458.27

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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.