Home / 74,504.35-102,815.45-40,512.86

Finding the Fourth Proportional to 74,504.35, 102,815.45 and 40,512.86

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Solution

The fourth proportional to 74,504.35, 102,815.45 and 40,512.86 is: 55,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,504.35 : 102,815.45 = 40,512.86 : x
  2. Step 2: Convert to fraction form
    74,504.35/102,815.45 = 40,512.86/x
  3. Step 3: Cross multiply
    74,504.35x = 102,815.45 × 40,512.86
  4. Step 4: Simplify right side
    74,504.35x = 4,165,347,729.12
  5. Step 5: Solve for x
    x = 4,165,347,729.12/74,504.35
  6. Step 6: Final answer
    x = 55,907.44

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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.