Home / 73,164.28-109,736.70-20,579.08

Finding the Fourth Proportional to 73,164.28, 109,736.70 and 20,579.08

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Solution

The fourth proportional to 73,164.28, 109,736.70 and 20,579.08 is: 30,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,164.28 : 109,736.70 = 20,579.08 : x
  2. Step 2: Convert to fraction form
    73,164.28/109,736.70 = 20,579.08/x
  3. Step 3: Cross multiply
    73,164.28x = 109,736.70 × 20,579.08
  4. Step 4: Simplify right side
    73,164.28x = 2,258,280,328.24
  5. Step 5: Solve for x
    x = 2,258,280,328.24/73,164.28
  6. Step 6: Final answer
    x = 30,865.89

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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.