Home / 71,376.21-107,056.04-18,789.80

Finding the Fourth Proportional to 71,376.21, 107,056.04 and 18,789.80

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Solution

The fourth proportional to 71,376.21, 107,056.04 and 18,789.80 is: 28,182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376.21 : 107,056.04 = 18,789.80 : x
  2. Step 2: Convert to fraction form
    71,376.21/107,056.04 = 18,789.80/x
  3. Step 3: Cross multiply
    71,376.21x = 107,056.04 × 18,789.80
  4. Step 4: Simplify right side
    71,376.21x = 2,011,560,951.16
  5. Step 5: Solve for x
    x = 2,011,560,951.16/71,376.21
  6. Step 6: Final answer
    x = 28,182.51

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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.