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Finding the Fourth Proportional to 65,608.40, 98,422.20 and 21,227.60

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Solution

The fourth proportional to 65,608.40, 98,422.20 and 21,227.60 is: 31,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,608.40 : 98,422.20 = 21,227.60 : x
  2. Step 2: Convert to fraction form
    65,608.40/98,422.20 = 21,227.60/x
  3. Step 3: Cross multiply
    65,608.40x = 98,422.20 × 21,227.60
  4. Step 4: Simplify right side
    65,608.40x = 2,089,267,092.72
  5. Step 5: Solve for x
    x = 2,089,267,092.72/65,608.40
  6. Step 6: Final answer
    x = 31,844.51

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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.