Home / 51,781.43-71,457.68-29,120.41

Finding the Fourth Proportional to 51,781.43, 71,457.68 and 29,120.41

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Solution

The fourth proportional to 51,781.43, 71,457.68 and 29,120.41 is: 40,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,781.43 : 71,457.68 = 29,120.41 : x
  2. Step 2: Convert to fraction form
    51,781.43/71,457.68 = 29,120.41/x
  3. Step 3: Cross multiply
    51,781.43x = 71,457.68 × 29,120.41
  4. Step 4: Simplify right side
    51,781.43x = 2,080,876,939.25
  5. Step 5: Solve for x
    x = 2,080,876,939.25/51,781.43
  6. Step 6: Final answer
    x = 40,185.78

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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.