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Finding the Fourth Proportional to 54,662.40, 81,993.60 and 45,914.40

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Solution

The fourth proportional to 54,662.40, 81,993.60 and 45,914.40 is: 68,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,662.40 : 81,993.60 = 45,914.40 : x
  2. Step 2: Convert to fraction form
    54,662.40/81,993.60 = 45,914.40/x
  3. Step 3: Cross multiply
    54,662.40x = 81,993.60 × 45,914.40
  4. Step 4: Simplify right side
    54,662.40x = 3,764,686,947.84
  5. Step 5: Solve for x
    x = 3,764,686,947.84/54,662.40
  6. Step 6: Final answer
    x = 68,871.60

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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.