Home / 66,385.40-91,610.74-36,171.08

Finding the Fourth Proportional to 66,385.40, 91,610.74 and 36,171.08

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Solution

The fourth proportional to 66,385.40, 91,610.74 and 36,171.08 is: 49,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,385.40 : 91,610.74 = 36,171.08 : x
  2. Step 2: Convert to fraction form
    66,385.40/91,610.74 = 36,171.08/x
  3. Step 3: Cross multiply
    66,385.40x = 91,610.74 × 36,171.08
  4. Step 4: Simplify right side
    66,385.40x = 3,313,659,405.40
  5. Step 5: Solve for x
    x = 3,313,659,405.40/66,385.40
  6. Step 6: Final answer
    x = 49,915.48

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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.