Home / 66,485.28-91,749.68-38,190.96

Finding the Fourth Proportional to 66,485.28, 91,749.68 and 38,190.96

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Solution

The fourth proportional to 66,485.28, 91,749.68 and 38,190.96 is: 52,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.28 : 91,749.68 = 38,190.96 : x
  2. Step 2: Convert to fraction form
    66,485.28/91,749.68 = 38,190.96/x
  3. Step 3: Cross multiply
    66,485.28x = 91,749.68 × 38,190.96
  4. Step 4: Simplify right side
    66,485.28x = 3,504,008,358.89
  5. Step 5: Solve for x
    x = 3,504,008,358.89/66,485.28
  6. Step 6: Final answer
    x = 52,703.52

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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.