Home / 84,121.22-116,099.78-55,436.49

Finding the Fourth Proportional to 84,121.22, 116,099.78 and 55,436.49

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Solution

The fourth proportional to 84,121.22, 116,099.78 and 55,436.49 is: 76,510.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,121.22 : 116,099.78 = 55,436.49 : x
  2. Step 2: Convert to fraction form
    84,121.22/116,099.78 = 55,436.49/x
  3. Step 3: Cross multiply
    84,121.22x = 116,099.78 × 55,436.49
  4. Step 4: Simplify right side
    84,121.22x = 6,436,164,015.79
  5. Step 5: Solve for x
    x = 6,436,164,015.79/84,121.22
  6. Step 6: Final answer
    x = 76,510.59

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1.5x scale

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.