Home / 68,882.16-103,309.60-18,949.36

Finding the Fourth Proportional to 68,882.16, 103,309.60 and 18,949.36

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Solution

The fourth proportional to 68,882.16, 103,309.60 and 18,949.36 is: 28,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,882.16 : 103,309.60 = 18,949.36 : x
  2. Step 2: Convert to fraction form
    68,882.16/103,309.60 = 18,949.36/x
  3. Step 3: Cross multiply
    68,882.16x = 103,309.60 × 18,949.36
  4. Step 4: Simplify right side
    68,882.16x = 1,957,650,801.86
  5. Step 5: Solve for x
    x = 1,957,650,801.86/68,882.16
  6. Step 6: Final answer
    x = 28,420.29

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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.