Home / 51,781.89-71,458.33-29,120.88

Finding the Fourth Proportional to 51,781.89, 71,458.33 and 29,120.88

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Solution

The fourth proportional to 51,781.89, 71,458.33 and 29,120.88 is: 40,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,781.89 : 71,458.33 = 29,120.88 : x
  2. Step 2: Convert to fraction form
    51,781.89/71,458.33 = 29,120.88/x
  3. Step 3: Cross multiply
    51,781.89x = 71,458.33 × 29,120.88
  4. Step 4: Simplify right side
    51,781.89x = 2,080,929,452.93
  5. Step 5: Solve for x
    x = 2,080,929,452.93/51,781.89
  6. Step 6: Final answer
    x = 40,186.43

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1.5x scale

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.