Home / 76,869.90-115,363.17-51,850.62

Finding the Fourth Proportional to 76,869.90, 115,363.17 and 51,850.62

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Solution

The fourth proportional to 76,869.90, 115,363.17 and 51,850.62 is: 77,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,869.90 : 115,363.17 = 51,850.62 : x
  2. Step 2: Convert to fraction form
    76,869.90/115,363.17 = 51,850.62/x
  3. Step 3: Cross multiply
    76,869.90x = 115,363.17 × 51,850.62
  4. Step 4: Simplify right side
    76,869.90x = 5,981,651,889.67
  5. Step 5: Solve for x
    x = 5,981,651,889.67/76,869.90
  6. Step 6: Final answer
    x = 77,815.27

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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.