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Finding the Fourth Proportional to 74,553.90, 102,883.59 and 40,563.42

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Solution

The fourth proportional to 74,553.90, 102,883.59 and 40,563.42 is: 55,977.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,553.90 : 102,883.59 = 40,563.42 : x
  2. Step 2: Convert to fraction form
    74,553.90/102,883.59 = 40,563.42/x
  3. Step 3: Cross multiply
    74,553.90x = 102,883.59 × 40,563.42
  4. Step 4: Simplify right side
    74,553.90x = 4,173,310,272.28
  5. Step 5: Solve for x
    x = 4,173,310,272.28/74,553.90
  6. Step 6: Final answer
    x = 55,977.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.