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Finding the Fourth Proportional to 77,057.58, 115,619.76 and 27,173.32

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Solution

The fourth proportional to 77,057.58, 115,619.76 and 27,173.32 is: 40,771.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,057.58 : 115,619.76 = 27,173.32 : x
  2. Step 2: Convert to fraction form
    77,057.58/115,619.76 = 27,173.32/x
  3. Step 3: Cross multiply
    77,057.58x = 115,619.76 × 27,173.32
  4. Step 4: Simplify right side
    77,057.58x = 3,141,772,736.80
  5. Step 5: Solve for x
    x = 3,141,772,736.80/77,057.58
  6. Step 6: Final answer
    x = 40,771.75

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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.