Home / 81,147.75-121,722.54-24,987.42

Finding the Fourth Proportional to 81,147.75, 121,722.54 and 24,987.42

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Solution

The fourth proportional to 81,147.75, 121,722.54 and 24,987.42 is: 37,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,147.75 : 121,722.54 = 24,987.42 : x
  2. Step 2: Convert to fraction form
    81,147.75/121,722.54 = 24,987.42/x
  3. Step 3: Cross multiply
    81,147.75x = 121,722.54 × 24,987.42
  4. Step 4: Simplify right side
    81,147.75x = 3,041,532,230.45
  5. Step 5: Solve for x
    x = 3,041,532,230.45/81,147.75
  6. Step 6: Final answer
    x = 37,481.41

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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.