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Finding the Fourth Proportional to 66,654.70, 99,978.95 and 16,733.69

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Solution

The fourth proportional to 66,654.70, 99,978.95 and 16,733.69 is: 25,099.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.70 : 99,978.95 = 16,733.69 : x
  2. Step 2: Convert to fraction form
    66,654.70/99,978.95 = 16,733.69/x
  3. Step 3: Cross multiply
    66,654.70x = 99,978.95 × 16,733.69
  4. Step 4: Simplify right side
    66,654.70x = 1,673,016,755.83
  5. Step 5: Solve for x
    x = 1,673,016,755.83/66,654.70
  6. Step 6: Final answer
    x = 25,099.76

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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.