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Finding the Fourth Proportional to 43,630.40, 65,464.80 and 20,244.80

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Solution

The fourth proportional to 43,630.40, 65,464.80 and 20,244.80 is: 30,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,630.40 : 65,464.80 = 20,244.80 : x
  2. Step 2: Convert to fraction form
    43,630.40/65,464.80 = 20,244.80/x
  3. Step 3: Cross multiply
    43,630.40x = 65,464.80 × 20,244.80
  4. Step 4: Simplify right side
    43,630.40x = 1,325,321,783.04
  5. Step 5: Solve for x
    x = 1,325,321,783.04/43,630.40
  6. Step 6: Final answer
    x = 30,376.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.