Home / 81,018.36-111,942.36-58,312.44

Finding the Fourth Proportional to 81,018.36, 111,942.36 and 58,312.44

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Solution

The fourth proportional to 81,018.36, 111,942.36 and 58,312.44 is: 80,569.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018.36 : 111,942.36 = 58,312.44 : x
  2. Step 2: Convert to fraction form
    81,018.36/111,942.36 = 58,312.44/x
  3. Step 3: Cross multiply
    81,018.36x = 111,942.36 × 58,312.44
  4. Step 4: Simplify right side
    81,018.36x = 6,527,632,150.96
  5. Step 5: Solve for x
    x = 6,527,632,150.96/81,018.36
  6. Step 6: Final answer
    x = 80,569.79

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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.