Home / 75,431.40-113,146.61-18,504.60

Finding the Fourth Proportional to 75,431.40, 113,146.61 and 18,504.60

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Solution

The fourth proportional to 75,431.40, 113,146.61 and 18,504.60 is: 27,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,431.40 : 113,146.61 = 18,504.60 : x
  2. Step 2: Convert to fraction form
    75,431.40/113,146.61 = 18,504.60/x
  3. Step 3: Cross multiply
    75,431.40x = 113,146.61 × 18,504.60
  4. Step 4: Simplify right side
    75,431.40x = 2,093,732,666.88
  5. Step 5: Solve for x
    x = 2,093,732,666.88/75,431.40
  6. Step 6: Final answer
    x = 27,756.78

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1.5x scale

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.