Home / 68,213.76-102,185.04-53,353.20

Finding the Fourth Proportional to 68,213.76, 102,185.04 and 53,353.20

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Solution

The fourth proportional to 68,213.76, 102,185.04 and 53,353.20 is: 79,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,213.76 : 102,185.04 = 53,353.20 : x
  2. Step 2: Convert to fraction form
    68,213.76/102,185.04 = 53,353.20/x
  3. Step 3: Cross multiply
    68,213.76x = 102,185.04 × 53,353.20
  4. Step 4: Simplify right side
    68,213.76x = 5,451,898,876.13
  5. Step 5: Solve for x
    x = 5,451,898,876.13/68,213.76
  6. Step 6: Final answer
    x = 79,923.74

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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.