Home / 81,338.75-122,014.26-25,184.78

Finding the Fourth Proportional to 81,338.75, 122,014.26 and 25,184.78

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Solution

The fourth proportional to 81,338.75, 122,014.26 and 25,184.78 is: 37,779.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338.75 : 122,014.26 = 25,184.78 : x
  2. Step 2: Convert to fraction form
    81,338.75/122,014.26 = 25,184.78/x
  3. Step 3: Cross multiply
    81,338.75x = 122,014.26 × 25,184.78
  4. Step 4: Simplify right side
    81,338.75x = 3,072,901,684.89
  5. Step 5: Solve for x
    x = 3,072,901,684.89/81,338.75
  6. Step 6: Final answer
    x = 37,779.06

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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.