Home / 51,551.68-77,193.06-28,129.72

Finding the Fourth Proportional to 51,551.68, 77,193.06 and 28,129.72

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Solution

The fourth proportional to 51,551.68, 77,193.06 and 28,129.72 is: 42,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,551.68 : 77,193.06 = 28,129.72 : x
  2. Step 2: Convert to fraction form
    51,551.68/77,193.06 = 28,129.72/x
  3. Step 3: Cross multiply
    51,551.68x = 77,193.06 × 28,129.72
  4. Step 4: Simplify right side
    51,551.68x = 2,171,419,163.74
  5. Step 5: Solve for x
    x = 2,171,419,163.74/51,551.68
  6. Step 6: Final answer
    x = 42,121.21

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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.