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Finding the Fourth Proportional to 92,018.98, 138,028.21 and 28,843.90

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Solution

The fourth proportional to 92,018.98, 138,028.21 and 28,843.90 is: 43,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,018.98 : 138,028.21 = 28,843.90 : x
  2. Step 2: Convert to fraction form
    92,018.98/138,028.21 = 28,843.90/x
  3. Step 3: Cross multiply
    92,018.98x = 138,028.21 × 28,843.90
  4. Step 4: Simplify right side
    92,018.98x = 3,981,271,886.42
  5. Step 5: Solve for x
    x = 3,981,271,886.42/92,018.98
  6. Step 6: Final answer
    x = 43,265.77

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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.