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Finding the Fourth Proportional to 66,650.64, 99,942 and 22,261.44

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Solution

The fourth proportional to 66,650.64, 99,942 and 22,261.44 is: 33,380.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,650.64 : 99,942 = 22,261.44 : x
  2. Step 2: Convert to fraction form
    66,650.64/99,942 = 22,261.44/x
  3. Step 3: Cross multiply
    66,650.64x = 99,942 × 22,261.44
  4. Step 4: Simplify right side
    66,650.64x = 2,224,852,836.48
  5. Step 5: Solve for x
    x = 2,224,852,836.48/66,650.64
  6. Step 6: Final answer
    x = 33,380.82

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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.