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Finding the Fourth Proportional to 65,851.40, 98,801.40 and 21,479.60

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Solution

The fourth proportional to 65,851.40, 98,801.40 and 21,479.60 is: 32,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.40 : 98,801.40 = 21,479.60 : x
  2. Step 2: Convert to fraction form
    65,851.40/98,801.40 = 21,479.60/x
  3. Step 3: Cross multiply
    65,851.40x = 98,801.40 × 21,479.60
  4. Step 4: Simplify right side
    65,851.40x = 2,122,214,551.44
  5. Step 5: Solve for x
    x = 2,122,214,551.44/65,851.40
  6. Step 6: Final answer
    x = 32,227.33

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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.