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Finding the Fourth Proportional to 54,388.40, 81,506.03 and 43,245.63

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Solution

The fourth proportional to 54,388.40, 81,506.03 and 43,245.63 is: 64,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,388.40 : 81,506.03 = 43,245.63 : x
  2. Step 2: Convert to fraction form
    54,388.40/81,506.03 = 43,245.63/x
  3. Step 3: Cross multiply
    54,388.40x = 81,506.03 × 43,245.63
  4. Step 4: Simplify right side
    54,388.40x = 3,524,779,399.92
  5. Step 5: Solve for x
    x = 3,524,779,399.92/54,388.40
  6. Step 6: Final answer
    x = 64,807.56

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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.