Home / 65,455.75-90,321.33-36,771.43

Finding the Fourth Proportional to 65,455.75, 90,321.33 and 36,771.43

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Solution

The fourth proportional to 65,455.75, 90,321.33 and 36,771.43 is: 50,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,455.75 : 90,321.33 = 36,771.43 : x
  2. Step 2: Convert to fraction form
    65,455.75/90,321.33 = 36,771.43/x
  3. Step 3: Cross multiply
    65,455.75x = 90,321.33 × 36,771.43
  4. Step 4: Simplify right side
    65,455.75x = 3,321,244,463.60
  5. Step 5: Solve for x
    x = 3,321,244,463.60/65,455.75
  6. Step 6: Final answer
    x = 50,740.30

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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.