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Finding the Fourth Proportional to 54,326.40, 81,489.60 and 36,611.70

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Solution

The fourth proportional to 54,326.40, 81,489.60 and 36,611.70 is: 54,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,326.40 : 81,489.60 = 36,611.70 : x
  2. Step 2: Convert to fraction form
    54,326.40/81,489.60 = 36,611.70/x
  3. Step 3: Cross multiply
    54,326.40x = 81,489.60 × 36,611.70
  4. Step 4: Simplify right side
    54,326.40x = 2,983,472,788.32
  5. Step 5: Solve for x
    x = 2,983,472,788.32/54,326.40
  6. Step 6: Final answer
    x = 54,917.55

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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.