Home / 81,339.03-121,975.74-25,165.94

Finding the Fourth Proportional to 81,339.03, 121,975.74 and 25,165.94

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Solution

The fourth proportional to 81,339.03, 121,975.74 and 25,165.94 is: 37,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.03 : 121,975.74 = 25,165.94 : x
  2. Step 2: Convert to fraction form
    81,339.03/121,975.74 = 25,165.94/x
  3. Step 3: Cross multiply
    81,339.03x = 121,975.74 × 25,165.94
  4. Step 4: Simplify right side
    81,339.03x = 3,069,633,544.42
  5. Step 5: Solve for x
    x = 3,069,633,544.42/81,339.03
  6. Step 6: Final answer
    x = 37,738.75

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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.