Home / 81,163.50-121,638.33-34,358.46

Finding the Fourth Proportional to 81,163.50, 121,638.33 and 34,358.46

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Solution

The fourth proportional to 81,163.50, 121,638.33 and 34,358.46 is: 51,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,163.50 : 121,638.33 = 34,358.46 : x
  2. Step 2: Convert to fraction form
    81,163.50/121,638.33 = 34,358.46/x
  3. Step 3: Cross multiply
    81,163.50x = 121,638.33 × 34,358.46
  4. Step 4: Simplify right side
    81,163.50x = 4,179,305,695.77
  5. Step 5: Solve for x
    x = 4,179,305,695.77/81,163.50
  6. Step 6: Final answer
    x = 51,492.43

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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.