Home / 81,330.57-122,021.37-48,910.08

Finding the Fourth Proportional to 81,330.57, 122,021.37 and 48,910.08

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Solution

The fourth proportional to 81,330.57, 122,021.37 and 48,910.08 is: 73,380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.57 : 122,021.37 = 48,910.08 : x
  2. Step 2: Convert to fraction form
    81,330.57/122,021.37 = 48,910.08/x
  3. Step 3: Cross multiply
    81,330.57x = 122,021.37 × 48,910.08
  4. Step 4: Simplify right side
    81,330.57x = 5,968,074,723.86
  5. Step 5: Solve for x
    x = 5,968,074,723.86/81,330.57
  6. Step 6: Final answer
    x = 73,380.47

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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.