Home / 90,556.62-135,804.16-31,378.48

Finding the Fourth Proportional to 90,556.62, 135,804.16 and 31,378.48

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Solution

The fourth proportional to 90,556.62, 135,804.16 and 31,378.48 is: 47,057.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,556.62 : 135,804.16 = 31,378.48 : x
  2. Step 2: Convert to fraction form
    90,556.62/135,804.16 = 31,378.48/x
  3. Step 3: Cross multiply
    90,556.62x = 135,804.16 × 31,378.48
  4. Step 4: Simplify right side
    90,556.62x = 4,261,328,118.48
  5. Step 5: Solve for x
    x = 4,261,328,118.48/90,556.62
  6. Step 6: Final answer
    x = 47,057.06

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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.