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Finding the Fourth Proportional to 65,965.73, 99,080.90 and 39,363.61

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Solution

The fourth proportional to 65,965.73, 99,080.90 and 39,363.61 is: 59,124.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,965.73 : 99,080.90 = 39,363.61 : x
  2. Step 2: Convert to fraction form
    65,965.73/99,080.90 = 39,363.61/x
  3. Step 3: Cross multiply
    65,965.73x = 99,080.90 × 39,363.61
  4. Step 4: Simplify right side
    65,965.73x = 3,900,181,544.88
  5. Step 5: Solve for x
    x = 3,900,181,544.88/65,965.73
  6. Step 6: Final answer
    x = 59,124.36

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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.