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Finding the Fourth Proportional to 48,178.26, 66,515.04 and 31,440.42

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Solution

The fourth proportional to 48,178.26, 66,515.04 and 31,440.42 is: 43,406.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,178.26 : 66,515.04 = 31,440.42 : x
  2. Step 2: Convert to fraction form
    48,178.26/66,515.04 = 31,440.42/x
  3. Step 3: Cross multiply
    48,178.26x = 66,515.04 × 31,440.42
  4. Step 4: Simplify right side
    48,178.26x = 2,091,260,793.92
  5. Step 5: Solve for x
    x = 2,091,260,793.92/48,178.26
  6. Step 6: Final answer
    x = 43,406.73

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.