Home / 81,339.22-122,029.87-47,633.71

Finding the Fourth Proportional to 81,339.22, 122,029.87 and 47,633.71

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Solution

The fourth proportional to 81,339.22, 122,029.87 and 47,633.71 is: 71,462.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.22 : 122,029.87 = 47,633.71 : x
  2. Step 2: Convert to fraction form
    81,339.22/122,029.87 = 47,633.71/x
  3. Step 3: Cross multiply
    81,339.22x = 122,029.87 × 47,633.71
  4. Step 4: Simplify right side
    81,339.22x = 5,812,734,709.68
  5. Step 5: Solve for x
    x = 5,812,734,709.68/81,339.22
  6. Step 6: Final answer
    x = 71,462.88

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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.