Home / 47,939.94-71,909.87-12,879.60

Finding the Fourth Proportional to 47,939.94, 71,909.87 and 12,879.60

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Solution

The fourth proportional to 47,939.94, 71,909.87 and 12,879.60 is: 19,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,939.94 : 71,909.87 = 12,879.60 : x
  2. Step 2: Convert to fraction form
    47,939.94/71,909.87 = 12,879.60/x
  3. Step 3: Cross multiply
    47,939.94x = 71,909.87 × 12,879.60
  4. Step 4: Simplify right side
    47,939.94x = 926,170,027.59
  5. Step 5: Solve for x
    x = 926,170,027.59/47,939.94
  6. Step 6: Final answer
    x = 19,319.38

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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.