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Finding the Fourth Proportional to 54,266.60, 81,375.60 and 20,975.60

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Solution

The fourth proportional to 54,266.60, 81,375.60 and 20,975.60 is: 31,454.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,266.60 : 81,375.60 = 20,975.60 : x
  2. Step 2: Convert to fraction form
    54,266.60/81,375.60 = 20,975.60/x
  3. Step 3: Cross multiply
    54,266.60x = 81,375.60 × 20,975.60
  4. Step 4: Simplify right side
    54,266.60x = 1,706,902,035.36
  5. Step 5: Solve for x
    x = 1,706,902,035.36/54,266.60
  6. Step 6: Final answer
    x = 31,454.01

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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.