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Finding the Fourth Proportional to 92,099.82, 138,145.62 and 28,918.44

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Solution

The fourth proportional to 92,099.82, 138,145.62 and 28,918.44 is: 43,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,099.82 : 138,145.62 = 28,918.44 : x
  2. Step 2: Convert to fraction form
    92,099.82/138,145.62 = 28,918.44/x
  3. Step 3: Cross multiply
    92,099.82x = 138,145.62 × 28,918.44
  4. Step 4: Simplify right side
    92,099.82x = 3,994,955,823.23
  5. Step 5: Solve for x
    x = 3,994,955,823.23/92,099.82
  6. Step 6: Final answer
    x = 43,376.37

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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.