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Finding the Fourth Proportional to 54,609.60, 82,000.80 and 39,921.60

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Solution

The fourth proportional to 54,609.60, 82,000.80 and 39,921.60 is: 59,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,609.60 : 82,000.80 = 39,921.60 : x
  2. Step 2: Convert to fraction form
    54,609.60/82,000.80 = 39,921.60/x
  3. Step 3: Cross multiply
    54,609.60x = 82,000.80 × 39,921.60
  4. Step 4: Simplify right side
    54,609.60x = 3,273,603,137.28
  5. Step 5: Solve for x
    x = 3,273,603,137.28/54,609.60
  6. Step 6: Final answer
    x = 59,945.56

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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.