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Finding the Fourth Proportional to 79,819.88, 119,548.58 and 61,906.74

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Solution

The fourth proportional to 79,819.88, 119,548.58 and 61,906.74 is: 92,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,819.88 : 119,548.58 = 61,906.74 : x
  2. Step 2: Convert to fraction form
    79,819.88/119,548.58 = 61,906.74/x
  3. Step 3: Cross multiply
    79,819.88x = 119,548.58 × 61,906.74
  4. Step 4: Simplify right side
    79,819.88x = 7,400,862,859.43
  5. Step 5: Solve for x
    x = 7,400,862,859.43/79,819.88
  6. Step 6: Final answer
    x = 92,719.54

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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.