Home / 81,578.06-122,352.48-51,907.76

Finding the Fourth Proportional to 81,578.06, 122,352.48 and 51,907.76

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Solution

The fourth proportional to 81,578.06, 122,352.48 and 51,907.76 is: 77,852.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,578.06 : 122,352.48 = 51,907.76 : x
  2. Step 2: Convert to fraction form
    81,578.06/122,352.48 = 51,907.76/x
  3. Step 3: Cross multiply
    81,578.06x = 122,352.48 × 51,907.76
  4. Step 4: Simplify right side
    81,578.06x = 6,351,042,555.48
  5. Step 5: Solve for x
    x = 6,351,042,555.48/81,578.06
  6. Step 6: Final answer
    x = 77,852.34

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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.