Home / 81,886.03-122,755.99-31,954.52

Finding the Fourth Proportional to 81,886.03, 122,755.99 and 31,954.52

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Solution

The fourth proportional to 81,886.03, 122,755.99 and 31,954.52 is: 47,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.03 : 122,755.99 = 31,954.52 : x
  2. Step 2: Convert to fraction form
    81,886.03/122,755.99 = 31,954.52/x
  3. Step 3: Cross multiply
    81,886.03x = 122,755.99 × 31,954.52
  4. Step 4: Simplify right side
    81,886.03x = 3,922,608,737.57
  5. Step 5: Solve for x
    x = 3,922,608,737.57/81,886.03
  6. Step 6: Final answer
    x = 47,903.27

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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.