Home / 66,042.20-91,091.58-39,163.16

Finding the Fourth Proportional to 66,042.20, 91,091.58 and 39,163.16

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Solution

The fourth proportional to 66,042.20, 91,091.58 and 39,163.16 is: 54,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.20 : 91,091.58 = 39,163.16 : x
  2. Step 2: Convert to fraction form
    66,042.20/91,091.58 = 39,163.16/x
  3. Step 3: Cross multiply
    66,042.20x = 91,091.58 × 39,163.16
  4. Step 4: Simplify right side
    66,042.20x = 3,567,434,122.19
  5. Step 5: Solve for x
    x = 3,567,434,122.19/66,042.20
  6. Step 6: Final answer
    x = 54,017.49

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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.