Home / 84,629.05-126,910.76-45,164.63

Finding the Fourth Proportional to 84,629.05, 126,910.76 and 45,164.63

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Solution

The fourth proportional to 84,629.05, 126,910.76 and 45,164.63 is: 67,729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,629.05 : 126,910.76 = 45,164.63 : x
  2. Step 2: Convert to fraction form
    84,629.05/126,910.76 = 45,164.63/x
  3. Step 3: Cross multiply
    84,629.05x = 126,910.76 × 45,164.63
  4. Step 4: Simplify right side
    84,629.05x = 5,731,877,609.87
  5. Step 5: Solve for x
    x = 5,731,877,609.87/84,629.05
  6. Step 6: Final answer
    x = 67,729.44

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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.