Home / 68,640.24-102,960.38-45,096.58

Finding the Fourth Proportional to 68,640.24, 102,960.38 and 45,096.58

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Solution

The fourth proportional to 68,640.24, 102,960.38 and 45,096.58 is: 67,644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,640.24 : 102,960.38 = 45,096.58 : x
  2. Step 2: Convert to fraction form
    68,640.24/102,960.38 = 45,096.58/x
  3. Step 3: Cross multiply
    68,640.24x = 102,960.38 × 45,096.58
  4. Step 4: Simplify right side
    68,640.24x = 4,643,161,254.94
  5. Step 5: Solve for x
    x = 4,643,161,254.94/68,640.24
  6. Step 6: Final answer
    x = 67,644.88

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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.