Home / 79,977.08-109,568.09-76,986.52

Finding the Fourth Proportional to 79,977.08, 109,568.09 and 76,986.52

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Solution

The fourth proportional to 79,977.08, 109,568.09 and 76,986.52 is: 105,471.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,977.08 : 109,568.09 = 76,986.52 : x
  2. Step 2: Convert to fraction form
    79,977.08/109,568.09 = 76,986.52/x
  3. Step 3: Cross multiply
    79,977.08x = 109,568.09 × 76,986.52
  4. Step 4: Simplify right side
    79,977.08x = 8,435,265,952.15
  5. Step 5: Solve for x
    x = 8,435,265,952.15/79,977.08
  6. Step 6: Final answer
    x = 105,471.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.