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Finding the Fourth Proportional to 54,999.60, 82,499.40 and 13,446.60

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Solution

The fourth proportional to 54,999.60, 82,499.40 and 13,446.60 is: 20,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,999.60 : 82,499.40 = 13,446.60 : x
  2. Step 2: Convert to fraction form
    54,999.60/82,499.40 = 13,446.60/x
  3. Step 3: Cross multiply
    54,999.60x = 82,499.40 × 13,446.60
  4. Step 4: Simplify right side
    54,999.60x = 1,109,336,432.04
  5. Step 5: Solve for x
    x = 1,109,336,432.04/54,999.60
  6. Step 6: Final answer
    x = 20,169.90

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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.