Home / 66,172.75-91,281.43-40,661.39

Finding the Fourth Proportional to 66,172.75, 91,281.43 and 40,661.39

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Solution

The fourth proportional to 66,172.75, 91,281.43 and 40,661.39 is: 56,090.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.75 : 91,281.43 = 40,661.39 : x
  2. Step 2: Convert to fraction form
    66,172.75/91,281.43 = 40,661.39/x
  3. Step 3: Cross multiply
    66,172.75x = 91,281.43 × 40,661.39
  4. Step 4: Simplify right side
    66,172.75x = 3,711,630,104.02
  5. Step 5: Solve for x
    x = 3,711,630,104.02/66,172.75
  6. Step 6: Final answer
    x = 56,090.01

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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.