Home / 66,409.61-91,604.30-40,556.03

Finding the Fourth Proportional to 66,409.61, 91,604.30 and 40,556.03

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Solution

The fourth proportional to 66,409.61, 91,604.30 and 40,556.03 is: 55,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409.61 : 91,604.30 = 40,556.03 : x
  2. Step 2: Convert to fraction form
    66,409.61/91,604.30 = 40,556.03/x
  3. Step 3: Cross multiply
    66,409.61x = 91,604.30 × 40,556.03
  4. Step 4: Simplify right side
    66,409.61x = 3,715,106,078.13
  5. Step 5: Solve for x
    x = 3,715,106,078.13/66,409.61
  6. Step 6: Final answer
    x = 55,942.30

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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.