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Finding the Fourth Proportional to 81,179.87, 111,955.65 and 50,967.99

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Solution

The fourth proportional to 81,179.87, 111,955.65 and 50,967.99 is: 70,290.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,179.87 : 111,955.65 = 50,967.99 : x
  2. Step 2: Convert to fraction form
    81,179.87/111,955.65 = 50,967.99/x
  3. Step 3: Cross multiply
    81,179.87x = 111,955.65 × 50,967.99
  4. Step 4: Simplify right side
    81,179.87x = 5,706,154,449.64
  5. Step 5: Solve for x
    x = 5,706,154,449.64/81,179.87
  6. Step 6: Final answer
    x = 70,290.27

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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.