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Finding the Fourth Proportional to 68,440.65, 102,628.17 and 35,143.59

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Solution

The fourth proportional to 68,440.65, 102,628.17 and 35,143.59 is: 52,698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,440.65 : 102,628.17 = 35,143.59 : x
  2. Step 2: Convert to fraction form
    68,440.65/102,628.17 = 35,143.59/x
  3. Step 3: Cross multiply
    68,440.65x = 102,628.17 × 35,143.59
  4. Step 4: Simplify right side
    68,440.65x = 3,606,722,328.93
  5. Step 5: Solve for x
    x = 3,606,722,328.93/68,440.65
  6. Step 6: Final answer
    x = 52,698.54

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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.