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Finding the Fourth Proportional to 66,915.10, 100,372.84 and 22,573

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Solution

The fourth proportional to 66,915.10, 100,372.84 and 22,573 is: 33,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.10 : 100,372.84 = 22,573 : x
  2. Step 2: Convert to fraction form
    66,915.10/100,372.84 = 22,573/x
  3. Step 3: Cross multiply
    66,915.10x = 100,372.84 × 22,573
  4. Step 4: Simplify right side
    66,915.10x = 2,265,716,117.32
  5. Step 5: Solve for x
    x = 2,265,716,117.32/66,915.10
  6. Step 6: Final answer
    x = 33,859.56

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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.