Home / 81,831.92-122,529-46,723.28

Finding the Fourth Proportional to 81,831.92, 122,529 and 46,723.28

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Solution

The fourth proportional to 81,831.92, 122,529 and 46,723.28 is: 69,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,831.92 : 122,529 = 46,723.28 : x
  2. Step 2: Convert to fraction form
    81,831.92/122,529 = 46,723.28/x
  3. Step 3: Cross multiply
    81,831.92x = 122,529 × 46,723.28
  4. Step 4: Simplify right side
    81,831.92x = 5,724,956,775.12
  5. Step 5: Solve for x
    x = 5,724,956,775.12/81,831.92
  6. Step 6: Final answer
    x = 69,959.95

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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.