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Finding the Fourth Proportional to 68,536.84, 102,816.06 and 21,800.20

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Solution

The fourth proportional to 68,536.84, 102,816.06 and 21,800.20 is: 32,703.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,536.84 : 102,816.06 = 21,800.20 : x
  2. Step 2: Convert to fraction form
    68,536.84/102,816.06 = 21,800.20/x
  3. Step 3: Cross multiply
    68,536.84x = 102,816.06 × 21,800.20
  4. Step 4: Simplify right side
    68,536.84x = 2,241,410,671.21
  5. Step 5: Solve for x
    x = 2,241,410,671.21/68,536.84
  6. Step 6: Final answer
    x = 32,703.74

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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.