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Finding the Fourth Proportional to 43,874.20, 65,811.30 and 40,245.40

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Solution

The fourth proportional to 43,874.20, 65,811.30 and 40,245.40 is: 60,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,874.20 : 65,811.30 = 40,245.40 : x
  2. Step 2: Convert to fraction form
    43,874.20/65,811.30 = 40,245.40/x
  3. Step 3: Cross multiply
    43,874.20x = 65,811.30 × 40,245.40
  4. Step 4: Simplify right side
    43,874.20x = 2,648,602,093.02
  5. Step 5: Solve for x
    x = 2,648,602,093.02/43,874.20
  6. Step 6: Final answer
    x = 60,368.10

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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.