Home / 81,096.64-111,786.24-74,579.32

Finding the Fourth Proportional to 81,096.64, 111,786.24 and 74,579.32

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Solution

The fourth proportional to 81,096.64, 111,786.24 and 74,579.32 is: 102,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,096.64 : 111,786.24 = 74,579.32 : x
  2. Step 2: Convert to fraction form
    81,096.64/111,786.24 = 74,579.32/x
  3. Step 3: Cross multiply
    81,096.64x = 111,786.24 × 74,579.32
  4. Step 4: Simplify right side
    81,096.64x = 8,336,941,764.56
  5. Step 5: Solve for x
    x = 8,336,941,764.56/81,096.64
  6. Step 6: Final answer
    x = 102,802.55

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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.