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Finding the Fourth Proportional to 43,449.84, 65,152.64 and 21,229.92

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Solution

The fourth proportional to 43,449.84, 65,152.64 and 21,229.92 is: 31,834.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,449.84 : 65,152.64 = 21,229.92 : x
  2. Step 2: Convert to fraction form
    43,449.84/65,152.64 = 21,229.92/x
  3. Step 3: Cross multiply
    43,449.84x = 65,152.64 × 21,229.92
  4. Step 4: Simplify right side
    43,449.84x = 1,383,185,334.99
  5. Step 5: Solve for x
    x = 1,383,185,334.99/43,449.84
  6. Step 6: Final answer
    x = 31,834.07

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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.