Home / 45,679.83-68,511.37-20,713.84

Finding the Fourth Proportional to 45,679.83, 68,511.37 and 20,713.84

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Solution

The fourth proportional to 45,679.83, 68,511.37 and 20,713.84 is: 31,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,679.83 : 68,511.37 = 20,713.84 : x
  2. Step 2: Convert to fraction form
    45,679.83/68,511.37 = 20,713.84/x
  3. Step 3: Cross multiply
    45,679.83x = 68,511.37 × 20,713.84
  4. Step 4: Simplify right side
    45,679.83x = 1,419,133,556.36
  5. Step 5: Solve for x
    x = 1,419,133,556.36/45,679.83
  6. Step 6: Final answer
    x = 31,066.96

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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.