Home / 81,340.22-122,031.37-47,634.71

Finding the Fourth Proportional to 81,340.22, 122,031.37 and 47,634.71

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Solution

The fourth proportional to 81,340.22, 122,031.37 and 47,634.71 is: 71,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,340.22 : 122,031.37 = 47,634.71 : x
  2. Step 2: Convert to fraction form
    81,340.22/122,031.37 = 47,634.71/x
  3. Step 3: Cross multiply
    81,340.22x = 122,031.37 × 47,634.71
  4. Step 4: Simplify right side
    81,340.22x = 5,812,928,920.85
  5. Step 5: Solve for x
    x = 5,812,928,920.85/81,340.22
  6. Step 6: Final answer
    x = 71,464.39

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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.