Home / 68,120.10-102,143.70-28,632.60

Finding the Fourth Proportional to 68,120.10, 102,143.70 and 28,632.60

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Solution

The fourth proportional to 68,120.10, 102,143.70 and 28,632.60 is: 42,933.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,120.10 : 102,143.70 = 28,632.60 : x
  2. Step 2: Convert to fraction form
    68,120.10/102,143.70 = 28,632.60/x
  3. Step 3: Cross multiply
    68,120.10x = 102,143.70 × 28,632.60
  4. Step 4: Simplify right side
    68,120.10x = 2,924,639,704.62
  5. Step 5: Solve for x
    x = 2,924,639,704.62/68,120.10
  6. Step 6: Final answer
    x = 42,933.58

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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.