Home / 43,821.20-65,736.60-42,438.80

Finding the Fourth Proportional to 43,821.20, 65,736.60 and 42,438.80

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Solution

The fourth proportional to 43,821.20, 65,736.60 and 42,438.80 is: 63,662.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,821.20 : 65,736.60 = 42,438.80 : x
  2. Step 2: Convert to fraction form
    43,821.20/65,736.60 = 42,438.80/x
  3. Step 3: Cross multiply
    43,821.20x = 65,736.60 × 42,438.80
  4. Step 4: Simplify right side
    43,821.20x = 2,789,782,420.08
  5. Step 5: Solve for x
    x = 2,789,782,420.08/43,821.20
  6. Step 6: Final answer
    x = 63,662.85

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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.