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Finding the Fourth Proportional to 66,633.54, 91,958.31 and 38,338.62

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Solution

The fourth proportional to 66,633.54, 91,958.31 and 38,338.62 is: 52,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,633.54 : 91,958.31 = 38,338.62 : x
  2. Step 2: Convert to fraction form
    66,633.54/91,958.31 = 38,338.62/x
  3. Step 3: Cross multiply
    66,633.54x = 91,958.31 × 38,338.62
  4. Step 4: Simplify right side
    66,633.54x = 3,525,554,702.93
  5. Step 5: Solve for x
    x = 3,525,554,702.93/66,633.54
  6. Step 6: Final answer
    x = 52,909.61

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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.