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Finding the Fourth Proportional to 50,879.92, 76,300.70 and 21,299.80

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Solution

The fourth proportional to 50,879.92, 76,300.70 and 21,299.80 is: 31,941.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,879.92 : 76,300.70 = 21,299.80 : x
  2. Step 2: Convert to fraction form
    50,879.92/76,300.70 = 21,299.80/x
  3. Step 3: Cross multiply
    50,879.92x = 76,300.70 × 21,299.80
  4. Step 4: Simplify right side
    50,879.92x = 1,625,189,649.86
  5. Step 5: Solve for x
    x = 1,625,189,649.86/50,879.92
  6. Step 6: Final answer
    x = 31,941.67

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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.