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Finding the Fourth Proportional to 66,852.69, 100,211.49 and 41,910.21

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Solution

The fourth proportional to 66,852.69, 100,211.49 and 41,910.21 is: 62,822.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,852.69 : 100,211.49 = 41,910.21 : x
  2. Step 2: Convert to fraction form
    66,852.69/100,211.49 = 41,910.21/x
  3. Step 3: Cross multiply
    66,852.69x = 100,211.49 × 41,910.21
  4. Step 4: Simplify right side
    66,852.69x = 4,199,884,590.31
  5. Step 5: Solve for x
    x = 4,199,884,590.31/66,852.69
  6. Step 6: Final answer
    x = 62,822.97

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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.