Home / 81,874.08-122,867.49-28,566.36

Finding the Fourth Proportional to 81,874.08, 122,867.49 and 28,566.36

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Solution

The fourth proportional to 81,874.08, 122,867.49 and 28,566.36 is: 42,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,874.08 : 122,867.49 = 28,566.36 : x
  2. Step 2: Convert to fraction form
    81,874.08/122,867.49 = 28,566.36/x
  3. Step 3: Cross multiply
    81,874.08x = 122,867.49 × 28,566.36
  4. Step 4: Simplify right side
    81,874.08x = 3,509,876,951.64
  5. Step 5: Solve for x
    x = 3,509,876,951.64/81,874.08
  6. Step 6: Final answer
    x = 42,869.21

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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.