Home / 80,380.72-110,861.39-51,703.66

Finding the Fourth Proportional to 80,380.72, 110,861.39 and 51,703.66

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Solution

The fourth proportional to 80,380.72, 110,861.39 and 51,703.66 is: 71,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380.72 : 110,861.39 = 51,703.66 : x
  2. Step 2: Convert to fraction form
    80,380.72/110,861.39 = 51,703.66/x
  3. Step 3: Cross multiply
    80,380.72x = 110,861.39 × 51,703.66
  4. Step 4: Simplify right side
    80,380.72x = 5,731,938,802.86
  5. Step 5: Solve for x
    x = 5,731,938,802.86/80,380.72
  6. Step 6: Final answer
    x = 71,309.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.