Home / 66,163.90-91,320.60-40,692.16

Finding the Fourth Proportional to 66,163.90, 91,320.60 and 40,692.16

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Solution

The fourth proportional to 66,163.90, 91,320.60 and 40,692.16 is: 56,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.90 : 91,320.60 = 40,692.16 : x
  2. Step 2: Convert to fraction form
    66,163.90/91,320.60 = 40,692.16/x
  3. Step 3: Cross multiply
    66,163.90x = 91,320.60 × 40,692.16
  4. Step 4: Simplify right side
    66,163.90x = 3,716,032,466.50
  5. Step 5: Solve for x
    x = 3,716,032,466.50/66,163.90
  6. Step 6: Final answer
    x = 56,164.05

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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.