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Finding the Fourth Proportional to 65,992.30, 99,006.87 and 21,650.24

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Solution

The fourth proportional to 65,992.30, 99,006.87 and 21,650.24 is: 32,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,992.30 : 99,006.87 = 21,650.24 : x
  2. Step 2: Convert to fraction form
    65,992.30/99,006.87 = 21,650.24/x
  3. Step 3: Cross multiply
    65,992.30x = 99,006.87 × 21,650.24
  4. Step 4: Simplify right side
    65,992.30x = 2,143,522,497.15
  5. Step 5: Solve for x
    x = 2,143,522,497.15/65,992.30
  6. Step 6: Final answer
    x = 32,481.40

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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.