Home / 43,228.32-64,819.95-20,408.34

Finding the Fourth Proportional to 43,228.32, 64,819.95 and 20,408.34

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Solution

The fourth proportional to 43,228.32, 64,819.95 and 20,408.34 is: 30,601.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,228.32 : 64,819.95 = 20,408.34 : x
  2. Step 2: Convert to fraction form
    43,228.32/64,819.95 = 20,408.34/x
  3. Step 3: Cross multiply
    43,228.32x = 64,819.95 × 20,408.34
  4. Step 4: Simplify right side
    43,228.32x = 1,322,867,578.38
  5. Step 5: Solve for x
    x = 1,322,867,578.38/43,228.32
  6. Step 6: Final answer
    x = 30,601.87

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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.