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Finding the Fourth Proportional to 55,162.56, 82,808.64 and 28,879.68

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Solution

The fourth proportional to 55,162.56, 82,808.64 and 28,879.68 is: 43,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,162.56 : 82,808.64 = 28,879.68 : x
  2. Step 2: Convert to fraction form
    55,162.56/82,808.64 = 28,879.68/x
  3. Step 3: Cross multiply
    55,162.56x = 82,808.64 × 28,879.68
  4. Step 4: Simplify right side
    55,162.56x = 2,391,487,024.44
  5. Step 5: Solve for x
    x = 2,391,487,024.44/55,162.56
  6. Step 6: Final answer
    x = 43,353.45

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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.