Home / 47,872.27-71,808.28-12,811.92

Finding the Fourth Proportional to 47,872.27, 71,808.28 and 12,811.92

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Solution

The fourth proportional to 47,872.27, 71,808.28 and 12,811.92 is: 19,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,872.27 : 71,808.28 = 12,811.92 : x
  2. Step 2: Convert to fraction form
    47,872.27/71,808.28 = 12,811.92/x
  3. Step 3: Cross multiply
    47,872.27x = 71,808.28 × 12,811.92
  4. Step 4: Simplify right side
    47,872.27x = 920,001,938.70
  5. Step 5: Solve for x
    x = 920,001,938.70/47,872.27
  6. Step 6: Final answer
    x = 19,217.85

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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.