Home / 51,438.31-77,163.63-18,151.50

Finding the Fourth Proportional to 51,438.31, 77,163.63 and 18,151.50

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Solution

The fourth proportional to 51,438.31, 77,163.63 and 18,151.50 is: 27,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.31 : 77,163.63 = 18,151.50 : x
  2. Step 2: Convert to fraction form
    51,438.31/77,163.63 = 18,151.50/x
  3. Step 3: Cross multiply
    51,438.31x = 77,163.63 × 18,151.50
  4. Step 4: Simplify right side
    51,438.31x = 1,400,635,629.95
  5. Step 5: Solve for x
    x = 1,400,635,629.95/51,438.31
  6. Step 6: Final answer
    x = 27,229.43

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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.