Home / 81,271.85-121,907.78-41,905.85

Finding the Fourth Proportional to 81,271.85, 121,907.78 and 41,905.85

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Solution

The fourth proportional to 81,271.85, 121,907.78 and 41,905.85 is: 62,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.85 : 121,907.78 = 41,905.85 : x
  2. Step 2: Convert to fraction form
    81,271.85/121,907.78 = 41,905.85/x
  3. Step 3: Cross multiply
    81,271.85x = 121,907.78 × 41,905.85
  4. Step 4: Simplify right side
    81,271.85x = 5,108,648,932.98
  5. Step 5: Solve for x
    x = 5,108,648,932.98/81,271.85
  6. Step 6: Final answer
    x = 62,858.78

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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.