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Finding the Fourth Proportional to 66,531.78, 99,776.07 and 22,146.62

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Solution

The fourth proportional to 66,531.78, 99,776.07 and 22,146.62 is: 33,212.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,531.78 : 99,776.07 = 22,146.62 : x
  2. Step 2: Convert to fraction form
    66,531.78/99,776.07 = 22,146.62/x
  3. Step 3: Cross multiply
    66,531.78x = 99,776.07 × 22,146.62
  4. Step 4: Simplify right side
    66,531.78x = 2,209,702,208.50
  5. Step 5: Solve for x
    x = 2,209,702,208.50/66,531.78
  6. Step 6: Final answer
    x = 33,212.73

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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.