Home / 65,965.37-91,016.35-39,114.48

Finding the Fourth Proportional to 65,965.37, 91,016.35 and 39,114.48

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Solution

The fourth proportional to 65,965.37, 91,016.35 and 39,114.48 is: 53,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,965.37 : 91,016.35 = 39,114.48 : x
  2. Step 2: Convert to fraction form
    65,965.37/91,016.35 = 39,114.48/x
  3. Step 3: Cross multiply
    65,965.37x = 91,016.35 × 39,114.48
  4. Step 4: Simplify right side
    65,965.37x = 3,560,057,201.75
  5. Step 5: Solve for x
    x = 3,560,057,201.75/65,965.37
  6. Step 6: Final answer
    x = 53,968.58

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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.