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Finding the Fourth Proportional to 68,540.77, 102,741.05 and 26,404.34

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Solution

The fourth proportional to 68,540.77, 102,741.05 and 26,404.34 is: 39,579.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,540.77 : 102,741.05 = 26,404.34 : x
  2. Step 2: Convert to fraction form
    68,540.77/102,741.05 = 26,404.34/x
  3. Step 3: Cross multiply
    68,540.77x = 102,741.05 × 26,404.34
  4. Step 4: Simplify right side
    68,540.77x = 2,712,809,484.14
  5. Step 5: Solve for x
    x = 2,712,809,484.14/68,540.77
  6. Step 6: Final answer
    x = 39,579.50

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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.