Home / 45,101.82-67,659.21-13,939.50

Finding the Fourth Proportional to 45,101.82, 67,659.21 and 13,939.50

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Solution

The fourth proportional to 45,101.82, 67,659.21 and 13,939.50 is: 20,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,101.82 : 67,659.21 = 13,939.50 : x
  2. Step 2: Convert to fraction form
    45,101.82/67,659.21 = 13,939.50/x
  3. Step 3: Cross multiply
    45,101.82x = 67,659.21 × 13,939.50
  4. Step 4: Simplify right side
    45,101.82x = 943,135,557.80
  5. Step 5: Solve for x
    x = 943,135,557.80/45,101.82
  6. Step 6: Final answer
    x = 20,911.25

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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.