Home / 66,389.12-91,616.16-36,173.66

Finding the Fourth Proportional to 66,389.12, 91,616.16 and 36,173.66

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Solution

The fourth proportional to 66,389.12, 91,616.16 and 36,173.66 is: 49,919.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,389.12 : 91,616.16 = 36,173.66 : x
  2. Step 2: Convert to fraction form
    66,389.12/91,616.16 = 36,173.66/x
  3. Step 3: Cross multiply
    66,389.12x = 91,616.16 × 36,173.66
  4. Step 4: Simplify right side
    66,389.12x = 3,314,092,272.93
  5. Step 5: Solve for x
    x = 3,314,092,272.93/66,389.12
  6. Step 6: Final answer
    x = 49,919.21

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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.