Home / 81,576.45-122,388.36-28,990.03

Finding the Fourth Proportional to 81,576.45, 122,388.36 and 28,990.03

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Solution

The fourth proportional to 81,576.45, 122,388.36 and 28,990.03 is: 43,493.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.45 : 122,388.36 = 28,990.03 : x
  2. Step 2: Convert to fraction form
    81,576.45/122,388.36 = 28,990.03/x
  3. Step 3: Cross multiply
    81,576.45x = 122,388.36 × 28,990.03
  4. Step 4: Simplify right side
    81,576.45x = 3,548,042,228.05
  5. Step 5: Solve for x
    x = 3,548,042,228.05/81,576.45
  6. Step 6: Final answer
    x = 43,493.46

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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.