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Finding the Fourth Proportional to 65,249.80, 97,878.42 and 18,499

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Solution

The fourth proportional to 65,249.80, 97,878.42 and 18,499 is: 27,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,249.80 : 97,878.42 = 18,499 : x
  2. Step 2: Convert to fraction form
    65,249.80/97,878.42 = 18,499/x
  3. Step 3: Cross multiply
    65,249.80x = 97,878.42 × 18,499
  4. Step 4: Simplify right side
    65,249.80x = 1,810,652,891.58
  5. Step 5: Solve for x
    x = 1,810,652,891.58/65,249.80
  6. Step 6: Final answer
    x = 27,749.55

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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.