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Finding the Fourth Proportional to 66,387.93, 91,617.66 and 36,175.74

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Solution

The fourth proportional to 66,387.93, 91,617.66 and 36,175.74 is: 49,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,387.93 : 91,617.66 = 36,175.74 : x
  2. Step 2: Convert to fraction form
    66,387.93/91,617.66 = 36,175.74/x
  3. Step 3: Cross multiply
    66,387.93x = 91,617.66 × 36,175.74
  4. Step 4: Simplify right side
    66,387.93x = 3,314,336,647.57
  5. Step 5: Solve for x
    x = 3,314,336,647.57/66,387.93
  6. Step 6: Final answer
    x = 49,923.78

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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.