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Finding the Fourth Proportional to 66,425.94, 91,665.09 and 36,210.60

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Solution

The fourth proportional to 66,425.94, 91,665.09 and 36,210.60 is: 49,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.94 : 91,665.09 = 36,210.60 : x
  2. Step 2: Convert to fraction form
    66,425.94/91,665.09 = 36,210.60/x
  3. Step 3: Cross multiply
    66,425.94x = 91,665.09 × 36,210.60
  4. Step 4: Simplify right side
    66,425.94x = 3,319,247,907.95
  5. Step 5: Solve for x
    x = 3,319,247,907.95/66,425.94
  6. Step 6: Final answer
    x = 49,969.15

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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.