Home / 81,821.19-122,846.70-41,868.75

Finding the Fourth Proportional to 81,821.19, 122,846.70 and 41,868.75

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Solution

The fourth proportional to 81,821.19, 122,846.70 and 41,868.75 is: 62,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.19 : 122,846.70 = 41,868.75 : x
  2. Step 2: Convert to fraction form
    81,821.19/122,846.70 = 41,868.75/x
  3. Step 3: Cross multiply
    81,821.19x = 122,846.70 × 41,868.75
  4. Step 4: Simplify right side
    81,821.19x = 5,143,437,770.63
  5. Step 5: Solve for x
    x = 5,143,437,770.63/81,821.19
  6. Step 6: Final answer
    x = 62,861.93

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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.