Home / 68,732.24-103,138.04-37,142.40

Finding the Fourth Proportional to 68,732.24, 103,138.04 and 37,142.40

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Solution

The fourth proportional to 68,732.24, 103,138.04 and 37,142.40 is: 55,735.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,732.24 : 103,138.04 = 37,142.40 : x
  2. Step 2: Convert to fraction form
    68,732.24/103,138.04 = 37,142.40/x
  3. Step 3: Cross multiply
    68,732.24x = 103,138.04 × 37,142.40
  4. Step 4: Simplify right side
    68,732.24x = 3,830,794,336.90
  5. Step 5: Solve for x
    x = 3,830,794,336.90/68,732.24
  6. Step 6: Final answer
    x = 55,735.04

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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.