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Finding the Fourth Proportional to 66,915.88, 100,357.50 and 22,531.08

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Solution

The fourth proportional to 66,915.88, 100,357.50 and 22,531.08 is: 33,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.88 : 100,357.50 = 22,531.08 : x
  2. Step 2: Convert to fraction form
    66,915.88/100,357.50 = 22,531.08/x
  3. Step 3: Cross multiply
    66,915.88x = 100,357.50 × 22,531.08
  4. Step 4: Simplify right side
    66,915.88x = 2,261,162,861.10
  5. Step 5: Solve for x
    x = 2,261,162,861.10/66,915.88
  6. Step 6: Final answer
    x = 33,791.12

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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.