Home / 47,786.85-71,688.90-19,691.55

Finding the Fourth Proportional to 47,786.85, 71,688.90 and 19,691.55

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Solution

The fourth proportional to 47,786.85, 71,688.90 and 19,691.55 is: 29,540.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,786.85 : 71,688.90 = 19,691.55 : x
  2. Step 2: Convert to fraction form
    47,786.85/71,688.90 = 19,691.55/x
  3. Step 3: Cross multiply
    47,786.85x = 71,688.90 × 19,691.55
  4. Step 4: Simplify right side
    47,786.85x = 1,411,665,558.80
  5. Step 5: Solve for x
    x = 1,411,665,558.80/47,786.85
  6. Step 6: Final answer
    x = 29,540.88

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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.