Home / 84,005.12-125,963.92-39,619.94

Finding the Fourth Proportional to 84,005.12, 125,963.92 and 39,619.94

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Solution

The fourth proportional to 84,005.12, 125,963.92 and 39,619.94 is: 59,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,005.12 : 125,963.92 = 39,619.94 : x
  2. Step 2: Convert to fraction form
    84,005.12/125,963.92 = 39,619.94/x
  3. Step 3: Cross multiply
    84,005.12x = 125,963.92 × 39,619.94
  4. Step 4: Simplify right side
    84,005.12x = 4,990,682,952.56
  5. Step 5: Solve for x
    x = 4,990,682,952.56/84,005.12
  6. Step 6: Final answer
    x = 59,409.27

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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.