Home / 68,908.20-103,348.62-18,975.36

Finding the Fourth Proportional to 68,908.20, 103,348.62 and 18,975.36

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Solution

The fourth proportional to 68,908.20, 103,348.62 and 18,975.36 is: 28,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.20 : 103,348.62 = 18,975.36 : x
  2. Step 2: Convert to fraction form
    68,908.20/103,348.62 = 18,975.36/x
  3. Step 3: Cross multiply
    68,908.20x = 103,348.62 × 18,975.36
  4. Step 4: Simplify right side
    68,908.20x = 1,961,077,270.00
  5. Step 5: Solve for x
    x = 1,961,077,270.00/68,908.20
  6. Step 6: Final answer
    x = 28,459.27

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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.