Home / 45,418.38-68,129.91-13,825.95

Finding the Fourth Proportional to 45,418.38, 68,129.91 and 13,825.95

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Solution

The fourth proportional to 45,418.38, 68,129.91 and 13,825.95 is: 20,739.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,418.38 : 68,129.91 = 13,825.95 : x
  2. Step 2: Convert to fraction form
    45,418.38/68,129.91 = 13,825.95/x
  3. Step 3: Cross multiply
    45,418.38x = 68,129.91 × 13,825.95
  4. Step 4: Simplify right side
    45,418.38x = 941,960,729.16
  5. Step 5: Solve for x
    x = 941,960,729.16/45,418.38
  6. Step 6: Final answer
    x = 20,739.64

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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.