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Finding the Fourth Proportional to 79,915.32, 119,841.82 and 29,968.20

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Solution

The fourth proportional to 79,915.32, 119,841.82 and 29,968.20 is: 44,940.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,915.32 : 119,841.82 = 29,968.20 : x
  2. Step 2: Convert to fraction form
    79,915.32/119,841.82 = 29,968.20/x
  3. Step 3: Cross multiply
    79,915.32x = 119,841.82 × 29,968.20
  4. Step 4: Simplify right side
    79,915.32x = 3,591,443,555.20
  5. Step 5: Solve for x
    x = 3,591,443,555.20/79,915.32
  6. Step 6: Final answer
    x = 44,940.61

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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.