Home / 55,631.89-76,771.51-30,137.68

Finding the Fourth Proportional to 55,631.89, 76,771.51 and 30,137.68

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Solution

The fourth proportional to 55,631.89, 76,771.51 and 30,137.68 is: 41,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,631.89 : 76,771.51 = 30,137.68 : x
  2. Step 2: Convert to fraction form
    55,631.89/76,771.51 = 30,137.68/x
  3. Step 3: Cross multiply
    55,631.89x = 76,771.51 × 30,137.68
  4. Step 4: Simplify right side
    55,631.89x = 2,313,715,201.50
  5. Step 5: Solve for x
    x = 2,313,715,201.50/55,631.89
  6. Step 6: Final answer
    x = 41,589.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.