Home / 80,542.09-111,160.19-57,955.84

Finding the Fourth Proportional to 80,542.09, 111,160.19 and 57,955.84

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Solution

The fourth proportional to 80,542.09, 111,160.19 and 57,955.84 is: 79,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,542.09 : 111,160.19 = 57,955.84 : x
  2. Step 2: Convert to fraction form
    80,542.09/111,160.19 = 57,955.84/x
  3. Step 3: Cross multiply
    80,542.09x = 111,160.19 × 57,955.84
  4. Step 4: Simplify right side
    80,542.09x = 6,442,382,678.27
  5. Step 5: Solve for x
    x = 6,442,382,678.27/80,542.09
  6. Step 6: Final answer
    x = 79,987.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.