Home / 45,241.13-67,840.11-20,281.37

Finding the Fourth Proportional to 45,241.13, 67,840.11 and 20,281.37

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Solution

The fourth proportional to 45,241.13, 67,840.11 and 20,281.37 is: 30,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,241.13 : 67,840.11 = 20,281.37 : x
  2. Step 2: Convert to fraction form
    45,241.13/67,840.11 = 20,281.37/x
  3. Step 3: Cross multiply
    45,241.13x = 67,840.11 × 20,281.37
  4. Step 4: Simplify right side
    45,241.13x = 1,375,890,371.75
  5. Step 5: Solve for x
    x = 1,375,890,371.75/45,241.13
  6. Step 6: Final answer
    x = 30,412.38

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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.