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Finding the Fourth Proportional to 43,890.40, 65,738.40 and 36,114.40

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Solution

The fourth proportional to 43,890.40, 65,738.40 and 36,114.40 is: 54,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,890.40 : 65,738.40 = 36,114.40 : x
  2. Step 2: Convert to fraction form
    43,890.40/65,738.40 = 36,114.40/x
  3. Step 3: Cross multiply
    43,890.40x = 65,738.40 × 36,114.40
  4. Step 4: Simplify right side
    43,890.40x = 2,374,102,872.96
  5. Step 5: Solve for x
    x = 2,374,102,872.96/43,890.40
  6. Step 6: Final answer
    x = 54,091.62

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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.