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Finding the Fourth Proportional to 66,488.46, 91,745.00 and 38,194.16

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Solution

The fourth proportional to 66,488.46, 91,745.00 and 38,194.16 is: 52,702.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,488.46 : 91,745.00 = 38,194.16 : x
  2. Step 2: Convert to fraction form
    66,488.46/91,745.00 = 38,194.16/x
  3. Step 3: Cross multiply
    66,488.46x = 91,745.00 × 38,194.16
  4. Step 4: Simplify right side
    66,488.46x = 3,504,122,559.50
  5. Step 5: Solve for x
    x = 3,504,122,559.50/66,488.46
  6. Step 6: Final answer
    x = 52,702.72

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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.