Home / 51,243.84-76,891.68-20,079.36

Finding the Fourth Proportional to 51,243.84, 76,891.68 and 20,079.36

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Solution

The fourth proportional to 51,243.84, 76,891.68 and 20,079.36 is: 30,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,243.84 : 76,891.68 = 20,079.36 : x
  2. Step 2: Convert to fraction form
    51,243.84/76,891.68 = 20,079.36/x
  3. Step 3: Cross multiply
    51,243.84x = 76,891.68 × 20,079.36
  4. Step 4: Simplify right side
    51,243.84x = 1,543,935,723.72
  5. Step 5: Solve for x
    x = 1,543,935,723.72/51,243.84
  6. Step 6: Final answer
    x = 30,129.20

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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.