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Finding the Fourth Proportional to 54,697.80, 81,997.20 and 38,065.80

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Solution

The fourth proportional to 54,697.80, 81,997.20 and 38,065.80 is: 57,064.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,697.80 : 81,997.20 = 38,065.80 : x
  2. Step 2: Convert to fraction form
    54,697.80/81,997.20 = 38,065.80/x
  3. Step 3: Cross multiply
    54,697.80x = 81,997.20 × 38,065.80
  4. Step 4: Simplify right side
    54,697.80x = 3,121,289,015.76
  5. Step 5: Solve for x
    x = 3,121,289,015.76/54,697.80
  6. Step 6: Final answer
    x = 57,064.25

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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.