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Finding the Fourth Proportional to 79,861.61, 119,759.65 and 29,916

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Solution

The fourth proportional to 79,861.61, 119,759.65 and 29,916 is: 44,861.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,861.61 : 119,759.65 = 29,916 : x
  2. Step 2: Convert to fraction form
    79,861.61/119,759.65 = 29,916/x
  3. Step 3: Cross multiply
    79,861.61x = 119,759.65 × 29,916
  4. Step 4: Simplify right side
    79,861.61x = 3,582,729,614.61
  5. Step 5: Solve for x
    x = 3,582,729,614.61/79,861.61
  6. Step 6: Final answer
    x = 44,861.72

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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.