Home / 68,222.86-102,345.24-28,785.78

Finding the Fourth Proportional to 68,222.86, 102,345.24 and 28,785.78

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Solution

The fourth proportional to 68,222.86, 102,345.24 and 28,785.78 is: 43,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,222.86 : 102,345.24 = 28,785.78 : x
  2. Step 2: Convert to fraction form
    68,222.86/102,345.24 = 28,785.78/x
  3. Step 3: Cross multiply
    68,222.86x = 102,345.24 × 28,785.78
  4. Step 4: Simplify right side
    68,222.86x = 2,946,087,562.69
  5. Step 5: Solve for x
    x = 2,946,087,562.69/68,222.86
  6. Step 6: Final answer
    x = 43,183.29

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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.