Home / 90,105.40-124,334.49-49,813.57

Finding the Fourth Proportional to 90,105.40, 124,334.49 and 49,813.57

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Solution

The fourth proportional to 90,105.40, 124,334.49 and 49,813.57 is: 68,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.40 : 124,334.49 = 49,813.57 : x
  2. Step 2: Convert to fraction form
    90,105.40/124,334.49 = 49,813.57/x
  3. Step 3: Cross multiply
    90,105.40x = 124,334.49 × 49,813.57
  4. Step 4: Simplify right side
    90,105.40x = 6,193,544,821.03
  5. Step 5: Solve for x
    x = 6,193,544,821.03/90,105.40
  6. Step 6: Final answer
    x = 68,736.67

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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.