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Finding the Fourth Proportional to 81,593.68, 122,362.80 and 28,273.22

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Solution

The fourth proportional to 81,593.68, 122,362.80 and 28,273.22 is: 42,400.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,593.68 : 122,362.80 = 28,273.22 : x
  2. Step 2: Convert to fraction form
    81,593.68/122,362.80 = 28,273.22/x
  3. Step 3: Cross multiply
    81,593.68x = 122,362.80 × 28,273.22
  4. Step 4: Simplify right side
    81,593.68x = 3,459,589,611.04
  5. Step 5: Solve for x
    x = 3,459,589,611.04/81,593.68
  6. Step 6: Final answer
    x = 42,400.22

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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.