Home / 81,719.85-122,579.79-29,092.43

Finding the Fourth Proportional to 81,719.85, 122,579.79 and 29,092.43

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Solution

The fourth proportional to 81,719.85, 122,579.79 and 29,092.43 is: 43,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,719.85 : 122,579.79 = 29,092.43 : x
  2. Step 2: Convert to fraction form
    81,719.85/122,579.79 = 29,092.43/x
  3. Step 3: Cross multiply
    81,719.85x = 122,579.79 × 29,092.43
  4. Step 4: Simplify right side
    81,719.85x = 3,566,144,157.34
  5. Step 5: Solve for x
    x = 3,566,144,157.34/81,719.85
  6. Step 6: Final answer
    x = 43,638.65

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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.