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Finding the Fourth Proportional to 66,067.80, 99,101.70 and 16,819.80

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Solution

The fourth proportional to 66,067.80, 99,101.70 and 16,819.80 is: 25,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,067.80 : 99,101.70 = 16,819.80 : x
  2. Step 2: Convert to fraction form
    66,067.80/99,101.70 = 16,819.80/x
  3. Step 3: Cross multiply
    66,067.80x = 99,101.70 × 16,819.80
  4. Step 4: Simplify right side
    66,067.80x = 1,666,870,773.66
  5. Step 5: Solve for x
    x = 1,666,870,773.66/66,067.80
  6. Step 6: Final answer
    x = 25,229.70

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1.5x scale

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.