Home / 50,781.85-76,179.86-21,192.90

Finding the Fourth Proportional to 50,781.85, 76,179.86 and 21,192.90

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Solution

The fourth proportional to 50,781.85, 76,179.86 and 21,192.90 is: 31,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,781.85 : 76,179.86 = 21,192.90 : x
  2. Step 2: Convert to fraction form
    50,781.85/76,179.86 = 21,192.90/x
  3. Step 3: Cross multiply
    50,781.85x = 76,179.86 × 21,192.90
  4. Step 4: Simplify right side
    50,781.85x = 1,614,472,154.99
  5. Step 5: Solve for x
    x = 1,614,472,154.99/50,781.85
  6. Step 6: Final answer
    x = 31,792.31

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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.