Home / 66,390.19-91,617.29-36,175.72

Finding the Fourth Proportional to 66,390.19, 91,617.29 and 36,175.72

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Solution

The fourth proportional to 66,390.19, 91,617.29 and 36,175.72 is: 49,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.19 : 91,617.29 = 36,175.72 : x
  2. Step 2: Convert to fraction form
    66,390.19/91,617.29 = 36,175.72/x
  3. Step 3: Cross multiply
    66,390.19x = 91,617.29 × 36,175.72
  4. Step 4: Simplify right side
    66,390.19x = 3,314,321,249.32
  5. Step 5: Solve for x
    x = 3,314,321,249.32/66,390.19
  6. Step 6: Final answer
    x = 49,921.85

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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.