Home / 30,620.64-45,872.52-20,742.96

Finding the Fourth Proportional to 30,620.64, 45,872.52 and 20,742.96

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Solution

The fourth proportional to 30,620.64, 45,872.52 and 20,742.96 is: 31,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.64 : 45,872.52 = 20,742.96 : x
  2. Step 2: Convert to fraction form
    30,620.64/45,872.52 = 20,742.96/x
  3. Step 3: Cross multiply
    30,620.64x = 45,872.52 × 20,742.96
  4. Step 4: Simplify right side
    30,620.64x = 951,531,847.46
  5. Step 5: Solve for x
    x = 951,531,847.46/30,620.64
  6. Step 6: Final answer
    x = 31,074.85

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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.