Home / 66,408.06-91,640.79-36,192.78

Finding the Fourth Proportional to 66,408.06, 91,640.79 and 36,192.78

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Solution

The fourth proportional to 66,408.06, 91,640.79 and 36,192.78 is: 49,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,408.06 : 91,640.79 = 36,192.78 : x
  2. Step 2: Convert to fraction form
    66,408.06/91,640.79 = 36,192.78/x
  3. Step 3: Cross multiply
    66,408.06x = 91,640.79 × 36,192.78
  4. Step 4: Simplify right side
    66,408.06x = 3,316,734,951.50
  5. Step 5: Solve for x
    x = 3,316,734,951.50/66,408.06
  6. Step 6: Final answer
    x = 49,944.77

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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.