Home / 76,983.44-106,231.09-42,989.27

Finding the Fourth Proportional to 76,983.44, 106,231.09 and 42,989.27

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Solution

The fourth proportional to 76,983.44, 106,231.09 and 42,989.27 is: 59,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,983.44 : 106,231.09 = 42,989.27 : x
  2. Step 2: Convert to fraction form
    76,983.44/106,231.09 = 42,989.27/x
  3. Step 3: Cross multiply
    76,983.44x = 106,231.09 × 42,989.27
  4. Step 4: Simplify right side
    76,983.44x = 4,566,796,795.46
  5. Step 5: Solve for x
    x = 4,566,796,795.46/76,983.44
  6. Step 6: Final answer
    x = 59,321.81

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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.