Home / 80,824-121,239.35-30,907.75

Finding the Fourth Proportional to 80,824, 121,239.35 and 30,907.75

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Solution

The fourth proportional to 80,824, 121,239.35 and 30,907.75 is: 46,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,824 : 121,239.35 = 30,907.75 : x
  2. Step 2: Convert to fraction form
    80,824/121,239.35 = 30,907.75/x
  3. Step 3: Cross multiply
    80,824x = 121,239.35 × 30,907.75
  4. Step 4: Simplify right side
    80,824x = 3,747,235,519.96
  5. Step 5: Solve for x
    x = 3,747,235,519.96/80,824
  6. Step 6: Final answer
    x = 46,362.91

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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.