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Finding the Fourth Proportional to 65,996.53, 98,986.03 and 18,615.44

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Solution

The fourth proportional to 65,996.53, 98,986.03 and 18,615.44 is: 27,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,996.53 : 98,986.03 = 18,615.44 : x
  2. Step 2: Convert to fraction form
    65,996.53/98,986.03 = 18,615.44/x
  3. Step 3: Cross multiply
    65,996.53x = 98,986.03 × 18,615.44
  4. Step 4: Simplify right side
    65,996.53x = 1,842,668,703.23
  5. Step 5: Solve for x
    x = 1,842,668,703.23/65,996.53
  6. Step 6: Final answer
    x = 27,920.69

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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.