Home / 81,283.52-121,977.12-34,536.41

Finding the Fourth Proportional to 81,283.52, 121,977.12 and 34,536.41

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Solution

The fourth proportional to 81,283.52, 121,977.12 and 34,536.41 is: 51,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.52 : 121,977.12 = 34,536.41 : x
  2. Step 2: Convert to fraction form
    81,283.52/121,977.12 = 34,536.41/x
  3. Step 3: Cross multiply
    81,283.52x = 121,977.12 × 34,536.41
  4. Step 4: Simplify right side
    81,283.52x = 4,212,651,217.05
  5. Step 5: Solve for x
    x = 4,212,651,217.05/81,283.52
  6. Step 6: Final answer
    x = 51,826.64

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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.