Home / 45,511.78-68,262.21-19,213.12

Finding the Fourth Proportional to 45,511.78, 68,262.21 and 19,213.12

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Solution

The fourth proportional to 45,511.78, 68,262.21 and 19,213.12 is: 28,817.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,511.78 : 68,262.21 = 19,213.12 : x
  2. Step 2: Convert to fraction form
    45,511.78/68,262.21 = 19,213.12/x
  3. Step 3: Cross multiply
    45,511.78x = 68,262.21 × 19,213.12
  4. Step 4: Simplify right side
    45,511.78x = 1,311,530,032.20
  5. Step 5: Solve for x
    x = 1,311,530,032.20/45,511.78
  6. Step 6: Final answer
    x = 28,817.38

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1.5x scale

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.