Home / 68,245.20-102,378.93-21,487.14

Finding the Fourth Proportional to 68,245.20, 102,378.93 and 21,487.14

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Solution

The fourth proportional to 68,245.20, 102,378.93 and 21,487.14 is: 32,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,245.20 : 102,378.93 = 21,487.14 : x
  2. Step 2: Convert to fraction form
    68,245.20/102,378.93 = 21,487.14/x
  3. Step 3: Cross multiply
    68,245.20x = 102,378.93 × 21,487.14
  4. Step 4: Simplify right side
    68,245.20x = 2,199,830,401.96
  5. Step 5: Solve for x
    x = 2,199,830,401.96/68,245.20
  6. Step 6: Final answer
    x = 32,234.21

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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.