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Finding the Fourth Proportional to 79,929.54, 119,894.11 and 75,057.80

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Solution

The fourth proportional to 79,929.54, 119,894.11 and 75,057.80 is: 112,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,929.54 : 119,894.11 = 75,057.80 : x
  2. Step 2: Convert to fraction form
    79,929.54/119,894.11 = 75,057.80/x
  3. Step 3: Cross multiply
    79,929.54x = 119,894.11 × 75,057.80
  4. Step 4: Simplify right side
    79,929.54x = 8,998,987,342.44
  5. Step 5: Solve for x
    x = 8,998,987,342.44/79,929.54
  6. Step 6: Final answer
    x = 112,586.50

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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.