Home / 45,181.92-67,749.84-18,879.60

Finding the Fourth Proportional to 45,181.92, 67,749.84 and 18,879.60

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Solution

The fourth proportional to 45,181.92, 67,749.84 and 18,879.60 is: 28,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,181.92 : 67,749.84 = 18,879.60 : x
  2. Step 2: Convert to fraction form
    45,181.92/67,749.84 = 18,879.60/x
  3. Step 3: Cross multiply
    45,181.92x = 67,749.84 × 18,879.60
  4. Step 4: Simplify right side
    45,181.92x = 1,279,089,879.26
  5. Step 5: Solve for x
    x = 1,279,089,879.26/45,181.92
  6. Step 6: Final answer
    x = 28,309.77

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1.5x scale

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.