Home / 80,508.86-111,102.64-50,311.74

Finding the Fourth Proportional to 80,508.86, 111,102.64 and 50,311.74

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Solution

The fourth proportional to 80,508.86, 111,102.64 and 50,311.74 is: 69,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,508.86 : 111,102.64 = 50,311.74 : x
  2. Step 2: Convert to fraction form
    80,508.86/111,102.64 = 50,311.74/x
  3. Step 3: Cross multiply
    80,508.86x = 111,102.64 × 50,311.74
  4. Step 4: Simplify right side
    80,508.86x = 5,589,767,136.99
  5. Step 5: Solve for x
    x = 5,589,767,136.99/80,508.86
  6. Step 6: Final answer
    x = 69,430.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.