Home / 66,785.45-92,170.85-39,577.77

Finding the Fourth Proportional to 66,785.45, 92,170.85 and 39,577.77

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Solution

The fourth proportional to 66,785.45, 92,170.85 and 39,577.77 is: 54,621.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.45 : 92,170.85 = 39,577.77 : x
  2. Step 2: Convert to fraction form
    66,785.45/92,170.85 = 39,577.77/x
  3. Step 3: Cross multiply
    66,785.45x = 92,170.85 × 39,577.77
  4. Step 4: Simplify right side
    66,785.45x = 3,647,916,504.12
  5. Step 5: Solve for x
    x = 3,647,916,504.12/66,785.45
  6. Step 6: Final answer
    x = 54,621.43

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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.