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Finding the Fourth Proportional to 81,595.33, 122,405.34 and 28,992.31

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Solution

The fourth proportional to 81,595.33, 122,405.34 and 28,992.31 is: 43,492.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,595.33 : 122,405.34 = 28,992.31 : x
  2. Step 2: Convert to fraction form
    81,595.33/122,405.34 = 28,992.31/x
  3. Step 3: Cross multiply
    81,595.33x = 122,405.34 × 28,992.31
  4. Step 4: Simplify right side
    81,595.33x = 3,548,813,562.94
  5. Step 5: Solve for x
    x = 3,548,813,562.94/81,595.33
  6. Step 6: Final answer
    x = 43,492.85

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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.