Home / 45,241.14-67,840.10-20,281.38

Finding the Fourth Proportional to 45,241.14, 67,840.10 and 20,281.38

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Solution

The fourth proportional to 45,241.14, 67,840.10 and 20,281.38 is: 30,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,241.14 : 67,840.10 = 20,281.38 : x
  2. Step 2: Convert to fraction form
    45,241.14/67,840.10 = 20,281.38/x
  3. Step 3: Cross multiply
    45,241.14x = 67,840.10 × 20,281.38
  4. Step 4: Simplify right side
    45,241.14x = 1,375,890,847.34
  5. Step 5: Solve for x
    x = 1,375,890,847.34/45,241.14
  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.