Home / 81,234.56-121,851.03-61,633.37

Finding the Fourth Proportional to 81,234.56, 121,851.03 and 61,633.37

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Solution

The fourth proportional to 81,234.56, 121,851.03 and 61,633.37 is: 92,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,234.56 : 121,851.03 = 61,633.37 : x
  2. Step 2: Convert to fraction form
    81,234.56/121,851.03 = 61,633.37/x
  3. Step 3: Cross multiply
    81,234.56x = 121,851.03 × 61,633.37
  4. Step 4: Simplify right side
    81,234.56x = 7,510,089,616.87
  5. Step 5: Solve for x
    x = 7,510,089,616.87/81,234.56
  6. Step 6: Final answer
    x = 92,449.44

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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.