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Finding the Fourth Proportional to 65,449.48, 90,310.44 and 36,763.64

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Solution

The fourth proportional to 65,449.48, 90,310.44 and 36,763.64 is: 50,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,449.48 : 90,310.44 = 36,763.64 : x
  2. Step 2: Convert to fraction form
    65,449.48/90,310.44 = 36,763.64/x
  3. Step 3: Cross multiply
    65,449.48x = 90,310.44 × 36,763.64
  4. Step 4: Simplify right side
    65,449.48x = 3,320,140,504.40
  5. Step 5: Solve for x
    x = 3,320,140,504.40/65,449.48
  6. Step 6: Final answer
    x = 50,728.29

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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.