Home / 68,929.18-103,445.24-51,200.78

Finding the Fourth Proportional to 68,929.18, 103,445.24 and 51,200.78

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Solution

The fourth proportional to 68,929.18, 103,445.24 and 51,200.78 is: 76,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,929.18 : 103,445.24 = 51,200.78 : x
  2. Step 2: Convert to fraction form
    68,929.18/103,445.24 = 51,200.78/x
  3. Step 3: Cross multiply
    68,929.18x = 103,445.24 × 51,200.78
  4. Step 4: Simplify right side
    68,929.18x = 5,296,476,202.06
  5. Step 5: Solve for x
    x = 5,296,476,202.06/68,929.18
  6. Step 6: Final answer
    x = 76,839.39

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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.