Home / 51,261.20-76,891.80-38,139.20

Finding the Fourth Proportional to 51,261.20, 76,891.80 and 38,139.20

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Solution

The fourth proportional to 51,261.20, 76,891.80 and 38,139.20 is: 57,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,261.20 : 76,891.80 = 38,139.20 : x
  2. Step 2: Convert to fraction form
    51,261.20/76,891.80 = 38,139.20/x
  3. Step 3: Cross multiply
    51,261.20x = 76,891.80 × 38,139.20
  4. Step 4: Simplify right side
    51,261.20x = 2,932,591,738.56
  5. Step 5: Solve for x
    x = 2,932,591,738.56/51,261.20
  6. Step 6: Final answer
    x = 57,208.80

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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.