Home / 66,021.94-91,121.92-39,179.24

Finding the Fourth Proportional to 66,021.94, 91,121.92 and 39,179.24

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Solution

The fourth proportional to 66,021.94, 91,121.92 and 39,179.24 is: 54,074.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.94 : 91,121.92 = 39,179.24 : x
  2. Step 2: Convert to fraction form
    66,021.94/91,121.92 = 39,179.24/x
  3. Step 3: Cross multiply
    66,021.94x = 91,121.92 × 39,179.24
  4. Step 4: Simplify right side
    66,021.94x = 3,570,087,572.94
  5. Step 5: Solve for x
    x = 3,570,087,572.94/66,021.94
  6. Step 6: Final answer
    x = 54,074.26

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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.