Home / 54,355.20-81,538.38-18,816.47

Finding the Fourth Proportional to 54,355.20, 81,538.38 and 18,816.47

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Solution

The fourth proportional to 54,355.20, 81,538.38 and 18,816.47 is: 28,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,355.20 : 81,538.38 = 18,816.47 : x
  2. Step 2: Convert to fraction form
    54,355.20/81,538.38 = 18,816.47/x
  3. Step 3: Cross multiply
    54,355.20x = 81,538.38 × 18,816.47
  4. Step 4: Simplify right side
    54,355.20x = 1,534,264,073.43
  5. Step 5: Solve for x
    x = 1,534,264,073.43/54,355.20
  6. Step 6: Final answer
    x = 28,226.63

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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.