Home / 66,640.22-99,910.41-40,338.62

Finding the Fourth Proportional to 66,640.22, 99,910.41 and 40,338.62

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Solution

The fourth proportional to 66,640.22, 99,910.41 and 40,338.62 is: 60,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.22 : 99,910.41 = 40,338.62 : x
  2. Step 2: Convert to fraction form
    66,640.22/99,910.41 = 40,338.62/x
  3. Step 3: Cross multiply
    66,640.22x = 99,910.41 × 40,338.62
  4. Step 4: Simplify right side
    66,640.22x = 4,030,248,063.03
  5. Step 5: Solve for x
    x = 4,030,248,063.03/66,640.22
  6. Step 6: Final answer
    x = 60,477.71

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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.