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Finding the Fourth Proportional to 81,474.83, 122,223.99 and 30,892.49

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Solution

The fourth proportional to 81,474.83, 122,223.99 and 30,892.49 is: 46,343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,474.83 : 122,223.99 = 30,892.49 : x
  2. Step 2: Convert to fraction form
    81,474.83/122,223.99 = 30,892.49/x
  3. Step 3: Cross multiply
    81,474.83x = 122,223.99 × 30,892.49
  4. Step 4: Simplify right side
    81,474.83x = 3,775,803,388.84
  5. Step 5: Solve for x
    x = 3,775,803,388.84/81,474.83
  6. Step 6: Final answer
    x = 46,343.19

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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.