Home / 45,905.18-68,849.83-12,171.42

Finding the Fourth Proportional to 45,905.18, 68,849.83 and 12,171.42

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Solution

The fourth proportional to 45,905.18, 68,849.83 and 12,171.42 is: 18,255.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.18 : 68,849.83 = 12,171.42 : x
  2. Step 2: Convert to fraction form
    45,905.18/68,849.83 = 12,171.42/x
  3. Step 3: Cross multiply
    45,905.18x = 68,849.83 × 12,171.42
  4. Step 4: Simplify right side
    45,905.18x = 838,000,197.86
  5. Step 5: Solve for x
    x = 838,000,197.86/45,905.18
  6. Step 6: Final answer
    x = 18,255.02

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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.