Home / 79,449.04-109,640.15-43,638.13

Finding the Fourth Proportional to 79,449.04, 109,640.15 and 43,638.13

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Solution

The fourth proportional to 79,449.04, 109,640.15 and 43,638.13 is: 60,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,449.04 : 109,640.15 = 43,638.13 : x
  2. Step 2: Convert to fraction form
    79,449.04/109,640.15 = 43,638.13/x
  3. Step 3: Cross multiply
    79,449.04x = 109,640.15 × 43,638.13
  4. Step 4: Simplify right side
    79,449.04x = 4,784,491,118.92
  5. Step 5: Solve for x
    x = 4,784,491,118.92/79,449.04
  6. Step 6: Final answer
    x = 60,220.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.