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Finding the Fourth Proportional to 68,520.62, 102,784.44 and 21,777.14

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Solution

The fourth proportional to 68,520.62, 102,784.44 and 21,777.14 is: 32,666.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,520.62 : 102,784.44 = 21,777.14 : x
  2. Step 2: Convert to fraction form
    68,520.62/102,784.44 = 21,777.14/x
  3. Step 3: Cross multiply
    68,520.62x = 102,784.44 × 21,777.14
  4. Step 4: Simplify right side
    68,520.62x = 2,238,351,139.70
  5. Step 5: Solve for x
    x = 2,238,351,139.70/68,520.62
  6. Step 6: Final answer
    x = 32,666.83

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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.