Home / 66,406.12-91,637.73-36,190.79

Finding the Fourth Proportional to 66,406.12, 91,637.73 and 36,190.79

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Solution

The fourth proportional to 66,406.12, 91,637.73 and 36,190.79 is: 49,941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.12 : 91,637.73 = 36,190.79 : x
  2. Step 2: Convert to fraction form
    66,406.12/91,637.73 = 36,190.79/x
  3. Step 3: Cross multiply
    66,406.12x = 91,637.73 × 36,190.79
  4. Step 4: Simplify right side
    66,406.12x = 3,316,441,727.96
  5. Step 5: Solve for x
    x = 3,316,441,727.96/66,406.12
  6. Step 6: Final answer
    x = 49,941.81

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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.