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Finding the Fourth Proportional to 47,590.85, 71,389.92 and 12,530

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Solution

The fourth proportional to 47,590.85, 71,389.92 and 12,530 is: 18,795.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,590.85 : 71,389.92 = 12,530 : x
  2. Step 2: Convert to fraction form
    47,590.85/71,389.92 = 12,530/x
  3. Step 3: Cross multiply
    47,590.85x = 71,389.92 × 12,530
  4. Step 4: Simplify right side
    47,590.85x = 894,515,697.60
  5. Step 5: Solve for x
    x = 894,515,697.60/47,590.85
  6. Step 6: Final answer
    x = 18,795.96

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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.