Home / 51,321.28-76,991.28-18,031.36

Finding the Fourth Proportional to 51,321.28, 76,991.28 and 18,031.36

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Solution

The fourth proportional to 51,321.28, 76,991.28 and 18,031.36 is: 27,050.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,321.28 : 76,991.28 = 18,031.36 : x
  2. Step 2: Convert to fraction form
    51,321.28/76,991.28 = 18,031.36/x
  3. Step 3: Cross multiply
    51,321.28x = 76,991.28 × 18,031.36
  4. Step 4: Simplify right side
    51,321.28x = 1,388,257,486.54
  5. Step 5: Solve for x
    x = 1,388,257,486.54/51,321.28
  6. Step 6: Final answer
    x = 27,050.33

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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.