Home / 66,099.60-99,144.14-18,712.85

Finding the Fourth Proportional to 66,099.60, 99,144.14 and 18,712.85

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Solution

The fourth proportional to 66,099.60, 99,144.14 and 18,712.85 is: 28,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.60 : 99,144.14 = 18,712.85 : x
  2. Step 2: Convert to fraction form
    66,099.60/99,144.14 = 18,712.85/x
  3. Step 3: Cross multiply
    66,099.60x = 99,144.14 × 18,712.85
  4. Step 4: Simplify right side
    66,099.60x = 1,855,268,830.91
  5. Step 5: Solve for x
    x = 1,855,268,830.91/66,099.60
  6. Step 6: Final answer
    x = 28,067.78

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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.