Home / 68,278.20-102,321.30-54,262.20

Finding the Fourth Proportional to 68,278.20, 102,321.30 and 54,262.20

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Solution

The fourth proportional to 68,278.20, 102,321.30 and 54,262.20 is: 81,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,278.20 : 102,321.30 = 54,262.20 : x
  2. Step 2: Convert to fraction form
    68,278.20/102,321.30 = 54,262.20/x
  3. Step 3: Cross multiply
    68,278.20x = 102,321.30 × 54,262.20
  4. Step 4: Simplify right side
    68,278.20x = 5,552,178,844.86
  5. Step 5: Solve for x
    x = 5,552,178,844.86/68,278.20
  6. Step 6: Final answer
    x = 81,317.01

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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.