Home / 81,948.62-122,893.27-28,625.72

Finding the Fourth Proportional to 81,948.62, 122,893.27 and 28,625.72

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Solution

The fourth proportional to 81,948.62, 122,893.27 and 28,625.72 is: 42,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,948.62 : 122,893.27 = 28,625.72 : x
  2. Step 2: Convert to fraction form
    81,948.62/122,893.27 = 28,625.72/x
  3. Step 3: Cross multiply
    81,948.62x = 122,893.27 × 28,625.72
  4. Step 4: Simplify right side
    81,948.62x = 3,517,907,650.87
  5. Step 5: Solve for x
    x = 3,517,907,650.87/81,948.62
  6. Step 6: Final answer
    x = 42,928.21

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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.