Home / 43,006.76-64,476.66-20,505.78

Finding the Fourth Proportional to 43,006.76, 64,476.66 and 20,505.78

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Solution

The fourth proportional to 43,006.76, 64,476.66 and 20,505.78 is: 30,742.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,006.76 : 64,476.66 = 20,505.78 : x
  2. Step 2: Convert to fraction form
    43,006.76/64,476.66 = 20,505.78/x
  3. Step 3: Cross multiply
    43,006.76x = 64,476.66 × 20,505.78
  4. Step 4: Simplify right side
    43,006.76x = 1,322,144,205.09
  5. Step 5: Solve for x
    x = 1,322,144,205.09/43,006.76
  6. Step 6: Final answer
    x = 30,742.71

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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.