Home / 66,161.89-91,317.84-40,690.17

Finding the Fourth Proportional to 66,161.89, 91,317.84 and 40,690.17

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Solution

The fourth proportional to 66,161.89, 91,317.84 and 40,690.17 is: 56,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,161.89 : 91,317.84 = 40,690.17 : x
  2. Step 2: Convert to fraction form
    66,161.89/91,317.84 = 40,690.17/x
  3. Step 3: Cross multiply
    66,161.89x = 91,317.84 × 40,690.17
  4. Step 4: Simplify right side
    66,161.89x = 3,715,738,433.63
  5. Step 5: Solve for x
    x = 3,715,738,433.63/66,161.89
  6. Step 6: Final answer
    x = 56,161.31

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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.