Home / 82,786.32-114,238.44-57,690

Finding the Fourth Proportional to 82,786.32, 114,238.44 and 57,690

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Solution

The fourth proportional to 82,786.32, 114,238.44 and 57,690 is: 79,607.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,786.32 : 114,238.44 = 57,690 : x
  2. Step 2: Convert to fraction form
    82,786.32/114,238.44 = 57,690/x
  3. Step 3: Cross multiply
    82,786.32x = 114,238.44 × 57,690
  4. Step 4: Simplify right side
    82,786.32x = 6,590,415,603.60
  5. Step 5: Solve for x
    x = 6,590,415,603.60/82,786.32
  6. Step 6: Final answer
    x = 79,607.54

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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.