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Finding the Fourth Proportional to 54,609.59, 81,850.47 and 20,853.50

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Solution

The fourth proportional to 54,609.59, 81,850.47 and 20,853.50 is: 31,255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,609.59 : 81,850.47 = 20,853.50 : x
  2. Step 2: Convert to fraction form
    54,609.59/81,850.47 = 20,853.50/x
  3. Step 3: Cross multiply
    54,609.59x = 81,850.47 × 20,853.50
  4. Step 4: Simplify right side
    54,609.59x = 1,706,868,571.52
  5. Step 5: Solve for x
    x = 1,706,868,571.52/54,609.59
  6. Step 6: Final answer
    x = 31,255.84

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1.5x scale

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.