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Finding the Fourth Proportional to 79,886.76, 119,833.02 and 29,961.80

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Solution

The fourth proportional to 79,886.76, 119,833.02 and 29,961.80 is: 44,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,886.76 : 119,833.02 = 29,961.80 : x
  2. Step 2: Convert to fraction form
    79,886.76/119,833.02 = 29,961.80/x
  3. Step 3: Cross multiply
    79,886.76x = 119,833.02 × 29,961.80
  4. Step 4: Simplify right side
    79,886.76x = 3,590,412,978.64
  5. Step 5: Solve for x
    x = 3,590,412,978.64/79,886.76
  6. Step 6: Final answer
    x = 44,943.78

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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.