Home / 54,356.20-81,539.88-18,817.47

Finding the Fourth Proportional to 54,356.20, 81,539.88 and 18,817.47

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Solution

The fourth proportional to 54,356.20, 81,539.88 and 18,817.47 is: 28,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,356.20 : 81,539.88 = 18,817.47 : x
  2. Step 2: Convert to fraction form
    54,356.20/81,539.88 = 18,817.47/x
  3. Step 3: Cross multiply
    54,356.20x = 81,539.88 × 18,817.47
  4. Step 4: Simplify right side
    54,356.20x = 1,534,374,245.70
  5. Step 5: Solve for x
    x = 1,534,374,245.70/54,356.20
  6. Step 6: Final answer
    x = 28,228.14

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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.