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Finding the Fourth Proportional to 65,856.01, 98,806.19 and 20,884.75

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Solution

The fourth proportional to 65,856.01, 98,806.19 and 20,884.75 is: 31,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,856.01 : 98,806.19 = 20,884.75 : x
  2. Step 2: Convert to fraction form
    65,856.01/98,806.19 = 20,884.75/x
  3. Step 3: Cross multiply
    65,856.01x = 98,806.19 × 20,884.75
  4. Step 4: Simplify right side
    65,856.01x = 2,063,542,576.60
  5. Step 5: Solve for x
    x = 2,063,542,576.60/65,856.01
  6. Step 6: Final answer
    x = 31,334.16

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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.