Home / 40,401.78-55,759.35-23,180.45

Finding the Fourth Proportional to 40,401.78, 55,759.35 and 23,180.45

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Solution

The fourth proportional to 40,401.78, 55,759.35 and 23,180.45 is: 31,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,401.78 : 55,759.35 = 23,180.45 : x
  2. Step 2: Convert to fraction form
    40,401.78/55,759.35 = 23,180.45/x
  3. Step 3: Cross multiply
    40,401.78x = 55,759.35 × 23,180.45
  4. Step 4: Simplify right side
    40,401.78x = 1,292,526,708.81
  5. Step 5: Solve for x
    x = 1,292,526,708.81/40,401.78
  6. Step 6: Final answer
    x = 31,991.83

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1.5x scale

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.