Home / 66,142.78-99,227.84-21,772.19

Finding the Fourth Proportional to 66,142.78, 99,227.84 and 21,772.19

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Solution

The fourth proportional to 66,142.78, 99,227.84 and 21,772.19 is: 32,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.78 : 99,227.84 = 21,772.19 : x
  2. Step 2: Convert to fraction form
    66,142.78/99,227.84 = 21,772.19/x
  3. Step 3: Cross multiply
    66,142.78x = 99,227.84 × 21,772.19
  4. Step 4: Simplify right side
    66,142.78x = 2,160,407,524.98
  5. Step 5: Solve for x
    x = 2,160,407,524.98/66,142.78
  6. Step 6: Final answer
    x = 32,662.79

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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.