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Finding the Fourth Proportional to 54,530.40, 81,795.60 and 53,752.80

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Solution

The fourth proportional to 54,530.40, 81,795.60 and 53,752.80 is: 80,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,530.40 : 81,795.60 = 53,752.80 : x
  2. Step 2: Convert to fraction form
    54,530.40/81,795.60 = 53,752.80/x
  3. Step 3: Cross multiply
    54,530.40x = 81,795.60 × 53,752.80
  4. Step 4: Simplify right side
    54,530.40x = 4,396,742,527.68
  5. Step 5: Solve for x
    x = 4,396,742,527.68/54,530.40
  6. Step 6: Final answer
    x = 80,629.20

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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.