Home / 81,867.45-122,838.44-39,724.77

Finding the Fourth Proportional to 81,867.45, 122,838.44 and 39,724.77

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Solution

The fourth proportional to 81,867.45, 122,838.44 and 39,724.77 is: 59,605.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867.45 : 122,838.44 = 39,724.77 : x
  2. Step 2: Convert to fraction form
    81,867.45/122,838.44 = 39,724.77/x
  3. Step 3: Cross multiply
    81,867.45x = 122,838.44 × 39,724.77
  4. Step 4: Simplify right side
    81,867.45x = 4,879,728,577.53
  5. Step 5: Solve for x
    x = 4,879,728,577.53/81,867.45
  6. Step 6: Final answer
    x = 59,605.23

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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.