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Finding the Fourth Proportional to 90,446.76, 135,568.08 and 43,644.96

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Solution

The fourth proportional to 90,446.76, 135,568.08 and 43,644.96 is: 65,418.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,446.76 : 135,568.08 = 43,644.96 : x
  2. Step 2: Convert to fraction form
    90,446.76/135,568.08 = 43,644.96/x
  3. Step 3: Cross multiply
    90,446.76x = 135,568.08 × 43,644.96
  4. Step 4: Simplify right side
    90,446.76x = 5,916,863,428.88
  5. Step 5: Solve for x
    x = 5,916,863,428.88/90,446.76
  6. Step 6: Final answer
    x = 65,418.19

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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.