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Finding the Fourth Proportional to 66,948.92, 100,422.96 and 17,028.60

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Solution

The fourth proportional to 66,948.92, 100,422.96 and 17,028.60 is: 25,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,948.92 : 100,422.96 = 17,028.60 : x
  2. Step 2: Convert to fraction form
    66,948.92/100,422.96 = 17,028.60/x
  3. Step 3: Cross multiply
    66,948.92x = 100,422.96 × 17,028.60
  4. Step 4: Simplify right side
    66,948.92x = 1,710,062,416.66
  5. Step 5: Solve for x
    x = 1,710,062,416.66/66,948.92
  6. Step 6: Final answer
    x = 25,542.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.