Home / 47,550.32-71,328.72-12,489.92

Finding the Fourth Proportional to 47,550.32, 71,328.72 and 12,489.92

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Solution

The fourth proportional to 47,550.32, 71,328.72 and 12,489.92 is: 18,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,550.32 : 71,328.72 = 12,489.92 : x
  2. Step 2: Convert to fraction form
    47,550.32/71,328.72 = 12,489.92/x
  3. Step 3: Cross multiply
    47,550.32x = 71,328.72 × 12,489.92
  4. Step 4: Simplify right side
    47,550.32x = 890,890,006.50
  5. Step 5: Solve for x
    x = 890,890,006.50/47,550.32
  6. Step 6: Final answer
    x = 18,735.73

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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.