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Finding the Fourth Proportional to 65,882.40, 98,629.20 and 43,720.80

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Solution

The fourth proportional to 65,882.40, 98,629.20 and 43,720.80 is: 65,452.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,882.40 : 98,629.20 = 43,720.80 : x
  2. Step 2: Convert to fraction form
    65,882.40/98,629.20 = 43,720.80/x
  3. Step 3: Cross multiply
    65,882.40x = 98,629.20 × 43,720.80
  4. Step 4: Simplify right side
    65,882.40x = 4,312,147,527.36
  5. Step 5: Solve for x
    x = 4,312,147,527.36/65,882.40
  6. Step 6: Final answer
    x = 65,452.19

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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.