Home / 81,191.58-121,704.32-41,136.36

Finding the Fourth Proportional to 81,191.58, 121,704.32 and 41,136.36

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Solution

The fourth proportional to 81,191.58, 121,704.32 and 41,136.36 is: 61,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,191.58 : 121,704.32 = 41,136.36 : x
  2. Step 2: Convert to fraction form
    81,191.58/121,704.32 = 41,136.36/x
  3. Step 3: Cross multiply
    81,191.58x = 121,704.32 × 41,136.36
  4. Step 4: Simplify right side
    81,191.58x = 5,006,472,367.52
  5. Step 5: Solve for x
    x = 5,006,472,367.52/81,191.58
  6. Step 6: Final answer
    x = 61,662.46

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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.