Home / 45,185.63-67,782.36-11,905.43

Finding the Fourth Proportional to 45,185.63, 67,782.36 and 11,905.43

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Solution

The fourth proportional to 45,185.63, 67,782.36 and 11,905.43 is: 17,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,185.63 : 67,782.36 = 11,905.43 : x
  2. Step 2: Convert to fraction form
    45,185.63/67,782.36 = 11,905.43/x
  3. Step 3: Cross multiply
    45,185.63x = 67,782.36 × 11,905.43
  4. Step 4: Simplify right side
    45,185.63x = 806,978,142.21
  5. Step 5: Solve for x
    x = 806,978,142.21/45,185.63
  6. Step 6: Final answer
    x = 17,859.18

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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.