Home / 79,446.06-109,638.36-43,639.38

Finding the Fourth Proportional to 79,446.06, 109,638.36 and 43,639.38

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Solution

The fourth proportional to 79,446.06, 109,638.36 and 43,639.38 is: 60,223.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,446.06 : 109,638.36 = 43,639.38 : x
  2. Step 2: Convert to fraction form
    79,446.06/109,638.36 = 43,639.38/x
  3. Step 3: Cross multiply
    79,446.06x = 109,638.36 × 43,639.38
  4. Step 4: Simplify right side
    79,446.06x = 4,784,550,054.62
  5. Step 5: Solve for x
    x = 4,784,550,054.62/79,446.06
  6. Step 6: Final answer
    x = 60,223.88

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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.