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Finding the Fourth Proportional to 43,651.62, 65,422.65 and 18,662.30

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Solution

The fourth proportional to 43,651.62, 65,422.65 and 18,662.30 is: 27,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,651.62 : 65,422.65 = 18,662.30 : x
  2. Step 2: Convert to fraction form
    43,651.62/65,422.65 = 18,662.30/x
  3. Step 3: Cross multiply
    43,651.62x = 65,422.65 × 18,662.30
  4. Step 4: Simplify right side
    43,651.62x = 1,220,937,231.97
  5. Step 5: Solve for x
    x = 1,220,937,231.97/43,651.62
  6. Step 6: Final answer
    x = 27,970.03

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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.