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Finding the Fourth Proportional to 66,425.08, 91,665.54 and 36,211.60

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Solution

The fourth proportional to 66,425.08, 91,665.54 and 36,211.60 is: 49,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.08 : 91,665.54 = 36,211.60 : x
  2. Step 2: Convert to fraction form
    66,425.08/91,665.54 = 36,211.60/x
  3. Step 3: Cross multiply
    66,425.08x = 91,665.54 × 36,211.60
  4. Step 4: Simplify right side
    66,425.08x = 3,319,355,868.26
  5. Step 5: Solve for x
    x = 3,319,355,868.26/66,425.08
  6. Step 6: Final answer
    x = 49,971.42

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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.