Home / 81,940.12-122,912.61-32,018.20

Finding the Fourth Proportional to 81,940.12, 122,912.61 and 32,018.20

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Solution

The fourth proportional to 81,940.12, 122,912.61 and 32,018.20 is: 48,028.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,940.12 : 122,912.61 = 32,018.20 : x
  2. Step 2: Convert to fraction form
    81,940.12/122,912.61 = 32,018.20/x
  3. Step 3: Cross multiply
    81,940.12x = 122,912.61 × 32,018.20
  4. Step 4: Simplify right side
    81,940.12x = 3,935,440,529.50
  5. Step 5: Solve for x
    x = 3,935,440,529.50/81,940.12
  6. Step 6: Final answer
    x = 48,028.25

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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.