Home / 74,418.21-102,698.82-40,427.91

Finding the Fourth Proportional to 74,418.21, 102,698.82 and 40,427.91

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Solution

The fourth proportional to 74,418.21, 102,698.82 and 40,427.91 is: 55,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,418.21 : 102,698.82 = 40,427.91 : x
  2. Step 2: Convert to fraction form
    74,418.21/102,698.82 = 40,427.91/x
  3. Step 3: Cross multiply
    74,418.21x = 102,698.82 × 40,427.91
  4. Step 4: Simplify right side
    74,418.21x = 4,151,898,652.07
  5. Step 5: Solve for x
    x = 4,151,898,652.07/74,418.21
  6. Step 6: Final answer
    x = 55,791.43

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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.