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Finding the Fourth Proportional to 43,797.30, 65,722.65 and 20,425.50

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Solution

The fourth proportional to 43,797.30, 65,722.65 and 20,425.50 is: 30,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,797.30 : 65,722.65 = 20,425.50 : x
  2. Step 2: Convert to fraction form
    43,797.30/65,722.65 = 20,425.50/x
  3. Step 3: Cross multiply
    43,797.30x = 65,722.65 × 20,425.50
  4. Step 4: Simplify right side
    43,797.30x = 1,342,417,987.58
  5. Step 5: Solve for x
    x = 1,342,417,987.58/43,797.30
  6. Step 6: Final answer
    x = 30,650.70

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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.