Home / 66,135.42-91,256.21-40,633.58

Finding the Fourth Proportional to 66,135.42, 91,256.21 and 40,633.58

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Solution

The fourth proportional to 66,135.42, 91,256.21 and 40,633.58 is: 56,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.42 : 91,256.21 = 40,633.58 : x
  2. Step 2: Convert to fraction form
    66,135.42/91,256.21 = 40,633.58/x
  3. Step 3: Cross multiply
    66,135.42x = 91,256.21 × 40,633.58
  4. Step 4: Simplify right side
    66,135.42x = 3,708,066,509.53
  5. Step 5: Solve for x
    x = 3,708,066,509.53/66,135.42
  6. Step 6: Final answer
    x = 56,067.79

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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.