Home / 47,420.30-71,134.50-12,359.90

Finding the Fourth Proportional to 47,420.30, 71,134.50 and 12,359.90

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Solution

The fourth proportional to 47,420.30, 71,134.50 and 12,359.90 is: 18,540.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,420.30 : 71,134.50 = 12,359.90 : x
  2. Step 2: Convert to fraction form
    47,420.30/71,134.50 = 12,359.90/x
  3. Step 3: Cross multiply
    47,420.30x = 71,134.50 × 12,359.90
  4. Step 4: Simplify right side
    47,420.30x = 879,215,306.55
  5. Step 5: Solve for x
    x = 879,215,306.55/47,420.30
  6. Step 6: Final answer
    x = 18,540.91

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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.