Home / 66,075.21-91,168.00-40,233.45

Finding the Fourth Proportional to 66,075.21, 91,168.00 and 40,233.45

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Solution

The fourth proportional to 66,075.21, 91,168.00 and 40,233.45 is: 55,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,075.21 : 91,168.00 = 40,233.45 : x
  2. Step 2: Convert to fraction form
    66,075.21/91,168.00 = 40,233.45/x
  3. Step 3: Cross multiply
    66,075.21x = 91,168.00 × 40,233.45
  4. Step 4: Simplify right side
    66,075.21x = 3,668,003,431.66
  5. Step 5: Solve for x
    x = 3,668,003,431.66/66,075.21
  6. Step 6: Final answer
    x = 55,512.55

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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.