Home / 81,981.56-122,948.04-35,223.50

Finding the Fourth Proportional to 81,981.56, 122,948.04 and 35,223.50

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Solution

The fourth proportional to 81,981.56, 122,948.04 and 35,223.50 is: 52,824.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,981.56 : 122,948.04 = 35,223.50 : x
  2. Step 2: Convert to fraction form
    81,981.56/122,948.04 = 35,223.50/x
  3. Step 3: Cross multiply
    81,981.56x = 122,948.04 × 35,223.50
  4. Step 4: Simplify right side
    81,981.56x = 4,330,660,286.94
  5. Step 5: Solve for x
    x = 4,330,660,286.94/81,981.56
  6. Step 6: Final answer
    x = 52,824.81

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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.