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Finding the Fourth Proportional to 68,395.36, 102,606 and 21,644.32

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Solution

The fourth proportional to 68,395.36, 102,606 and 21,644.32 is: 32,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,395.36 : 102,606 = 21,644.32 : x
  2. Step 2: Convert to fraction form
    68,395.36/102,606 = 21,644.32/x
  3. Step 3: Cross multiply
    68,395.36x = 102,606 × 21,644.32
  4. Step 4: Simplify right side
    68,395.36x = 2,220,837,097.92
  5. Step 5: Solve for x
    x = 2,220,837,097.92/68,395.36
  6. Step 6: Final answer
    x = 32,470.58

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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.