Home / 81,486.18-122,205.75-22,323.78

Finding the Fourth Proportional to 81,486.18, 122,205.75 and 22,323.78

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Solution

The fourth proportional to 81,486.18, 122,205.75 and 22,323.78 is: 33,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,486.18 : 122,205.75 = 22,323.78 : x
  2. Step 2: Convert to fraction form
    81,486.18/122,205.75 = 22,323.78/x
  3. Step 3: Cross multiply
    81,486.18x = 122,205.75 × 22,323.78
  4. Step 4: Simplify right side
    81,486.18x = 2,728,094,277.74
  5. Step 5: Solve for x
    x = 2,728,094,277.74/81,486.18
  6. Step 6: Final answer
    x = 33,479.23

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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.