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Finding the Fourth Proportional to 66,759.54, 92,098.85 and 39,888.60

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Solution

The fourth proportional to 66,759.54, 92,098.85 and 39,888.60 is: 55,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,759.54 : 92,098.85 = 39,888.60 : x
  2. Step 2: Convert to fraction form
    66,759.54/92,098.85 = 39,888.60/x
  3. Step 3: Cross multiply
    66,759.54x = 92,098.85 × 39,888.60
  4. Step 4: Simplify right side
    66,759.54x = 3,673,694,188.11
  5. Step 5: Solve for x
    x = 3,673,694,188.11/66,759.54
  6. Step 6: Final answer
    x = 55,028.75

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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.