Home / 45,406.44-68,112.84-12,126.36

Finding the Fourth Proportional to 45,406.44, 68,112.84 and 12,126.36

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Solution

The fourth proportional to 45,406.44, 68,112.84 and 12,126.36 is: 18,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,406.44 : 68,112.84 = 12,126.36 : x
  2. Step 2: Convert to fraction form
    45,406.44/68,112.84 = 12,126.36/x
  3. Step 3: Cross multiply
    45,406.44x = 68,112.84 × 12,126.36
  4. Step 4: Simplify right side
    45,406.44x = 825,960,818.46
  5. Step 5: Solve for x
    x = 825,960,818.46/45,406.44
  6. Step 6: Final answer
    x = 18,190.39

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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.