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Finding the Fourth Proportional to 68,358.22, 102,536.69 and 21,611.10

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Solution

The fourth proportional to 68,358.22, 102,536.69 and 21,611.10 is: 32,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,358.22 : 102,536.69 = 21,611.10 : x
  2. Step 2: Convert to fraction form
    68,358.22/102,536.69 = 21,611.10/x
  3. Step 3: Cross multiply
    68,358.22x = 102,536.69 × 21,611.10
  4. Step 4: Simplify right side
    68,358.22x = 2,215,930,661.26
  5. Step 5: Solve for x
    x = 2,215,930,661.26/68,358.22
  6. Step 6: Final answer
    x = 32,416.45

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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.