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Finding the Fourth Proportional to 68,370, 102,603.60 and 26,817

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Solution

The fourth proportional to 68,370, 102,603.60 and 26,817 is: 40,244.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,370 : 102,603.60 = 26,817 : x
  2. Step 2: Convert to fraction form
    68,370/102,603.60 = 26,817/x
  3. Step 3: Cross multiply
    68,370x = 102,603.60 × 26,817
  4. Step 4: Simplify right side
    68,370x = 2,751,520,741.20
  5. Step 5: Solve for x
    x = 2,751,520,741.20/68,370
  6. Step 6: Final answer
    x = 40,244.56

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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.