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Finding the Fourth Proportional to 68,620.55, 102,946.01 and 21,873.42

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Solution

The fourth proportional to 68,620.55, 102,946.01 and 21,873.42 is: 32,814.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,620.55 : 102,946.01 = 21,873.42 : x
  2. Step 2: Convert to fraction form
    68,620.55/102,946.01 = 21,873.42/x
  3. Step 3: Cross multiply
    68,620.55x = 102,946.01 × 21,873.42
  4. Step 4: Simplify right side
    68,620.55x = 2,251,781,204.69
  5. Step 5: Solve for x
    x = 2,251,781,204.69/68,620.55
  6. Step 6: Final answer
    x = 32,814.97

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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.