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Finding the Fourth Proportional to 54,499.80, 81,770.46 and 18,965.07

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Solution

The fourth proportional to 54,499.80, 81,770.46 and 18,965.07 is: 28,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,499.80 : 81,770.46 = 18,965.07 : x
  2. Step 2: Convert to fraction form
    54,499.80/81,770.46 = 18,965.07/x
  3. Step 3: Cross multiply
    54,499.80x = 81,770.46 × 18,965.07
  4. Step 4: Simplify right side
    54,499.80x = 1,550,781,994.15
  5. Step 5: Solve for x
    x = 1,550,781,994.15/54,499.80
  6. Step 6: Final answer
    x = 28,454.82

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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.