Home / 45,129.43-67,620.17-31,958.15

Finding the Fourth Proportional to 45,129.43, 67,620.17 and 31,958.15

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Solution

The fourth proportional to 45,129.43, 67,620.17 and 31,958.15 is: 47,884.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.43 : 67,620.17 = 31,958.15 : x
  2. Step 2: Convert to fraction form
    45,129.43/67,620.17 = 31,958.15/x
  3. Step 3: Cross multiply
    45,129.43x = 67,620.17 × 31,958.15
  4. Step 4: Simplify right side
    45,129.43x = 2,161,015,376.09
  5. Step 5: Solve for x
    x = 2,161,015,376.09/45,129.43
  6. Step 6: Final answer
    x = 47,884.84

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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.