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Finding the Fourth Proportional to 43,951.43, 65,931.03 and 12,361.76

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Solution

The fourth proportional to 43,951.43, 65,931.03 and 12,361.76 is: 18,543.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,951.43 : 65,931.03 = 12,361.76 : x
  2. Step 2: Convert to fraction form
    43,951.43/65,931.03 = 12,361.76/x
  3. Step 3: Cross multiply
    43,951.43x = 65,931.03 × 12,361.76
  4. Step 4: Simplify right side
    43,951.43x = 815,023,569.41
  5. Step 5: Solve for x
    x = 815,023,569.41/43,951.43
  6. Step 6: Final answer
    x = 18,543.73

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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.