Home / 81,964.91-113,119.68-47,971.37

Finding the Fourth Proportional to 81,964.91, 113,119.68 and 47,971.37

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Solution

The fourth proportional to 81,964.91, 113,119.68 and 47,971.37 is: 66,205.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.91 : 113,119.68 = 47,971.37 : x
  2. Step 2: Convert to fraction form
    81,964.91/113,119.68 = 47,971.37/x
  3. Step 3: Cross multiply
    81,964.91x = 113,119.68 × 47,971.37
  4. Step 4: Simplify right side
    81,964.91x = 5,426,505,457.96
  5. Step 5: Solve for x
    x = 5,426,505,457.96/81,964.91
  6. Step 6: Final answer
    x = 66,205.23

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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.