Home / 81,910.56-122,821.80-48,188.25

Finding the Fourth Proportional to 81,910.56, 122,821.80 and 48,188.25

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Solution

The fourth proportional to 81,910.56, 122,821.80 and 48,188.25 is: 72,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,910.56 : 122,821.80 = 48,188.25 : x
  2. Step 2: Convert to fraction form
    81,910.56/122,821.80 = 48,188.25/x
  3. Step 3: Cross multiply
    81,910.56x = 122,821.80 × 48,188.25
  4. Step 4: Simplify right side
    81,910.56x = 5,918,567,603.85
  5. Step 5: Solve for x
    x = 5,918,567,603.85/81,910.56
  6. Step 6: Final answer
    x = 72,256.47

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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.