Home / 80,885.21-111,620.07-45,074.43

Finding the Fourth Proportional to 80,885.21, 111,620.07 and 45,074.43

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Solution

The fourth proportional to 80,885.21, 111,620.07 and 45,074.43 is: 62,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885.21 : 111,620.07 = 45,074.43 : x
  2. Step 2: Convert to fraction form
    80,885.21/111,620.07 = 45,074.43/x
  3. Step 3: Cross multiply
    80,885.21x = 111,620.07 × 45,074.43
  4. Step 4: Simplify right side
    80,885.21x = 5,031,211,031.81
  5. Step 5: Solve for x
    x = 5,031,211,031.81/80,885.21
  6. Step 6: Final answer
    x = 62,201.87

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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.