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Finding the Fourth Proportional to 54,651.60, 81,991.04 and 43,449.30

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Solution

The fourth proportional to 54,651.60, 81,991.04 and 43,449.30 is: 65,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,651.60 : 81,991.04 = 43,449.30 : x
  2. Step 2: Convert to fraction form
    54,651.60/81,991.04 = 43,449.30/x
  3. Step 3: Cross multiply
    54,651.60x = 81,991.04 × 43,449.30
  4. Step 4: Simplify right side
    54,651.60x = 3,562,453,077.03
  5. Step 5: Solve for x
    x = 3,562,453,077.03/54,651.60
  6. Step 6: Final answer
    x = 65,184.79

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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.