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Finding the Fourth Proportional to 65,262.80, 97,897.92 and 18,512

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Solution

The fourth proportional to 65,262.80, 97,897.92 and 18,512 is: 27,769.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,262.80 : 97,897.92 = 18,512 : x
  2. Step 2: Convert to fraction form
    65,262.80/97,897.92 = 18,512/x
  3. Step 3: Cross multiply
    65,262.80x = 97,897.92 × 18,512
  4. Step 4: Simplify right side
    65,262.80x = 1,812,286,295.04
  5. Step 5: Solve for x
    x = 1,812,286,295.04/65,262.80
  6. Step 6: Final answer
    x = 27,769.06

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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.