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Finding the Fourth Proportional to 65,427.03, 98,130.02 and 18,668.97

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Solution

The fourth proportional to 65,427.03, 98,130.02 and 18,668.97 is: 28,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,427.03 : 98,130.02 = 18,668.97 : x
  2. Step 2: Convert to fraction form
    65,427.03/98,130.02 = 18,668.97/x
  3. Step 3: Cross multiply
    65,427.03x = 98,130.02 × 18,668.97
  4. Step 4: Simplify right side
    65,427.03x = 1,831,986,306.13
  5. Step 5: Solve for x
    x = 1,831,986,306.13/65,427.03
  6. Step 6: Final answer
    x = 28,000.45

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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.