Home / 66,884.13-100,315.25-20,126.07

Finding the Fourth Proportional to 66,884.13, 100,315.25 and 20,126.07

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Solution

The fourth proportional to 66,884.13, 100,315.25 and 20,126.07 is: 30,185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,884.13 : 100,315.25 = 20,126.07 : x
  2. Step 2: Convert to fraction form
    66,884.13/100,315.25 = 20,126.07/x
  3. Step 3: Cross multiply
    66,884.13x = 100,315.25 × 20,126.07
  4. Step 4: Simplify right side
    66,884.13x = 2,018,951,241.99
  5. Step 5: Solve for x
    x = 2,018,951,241.99/66,884.13
  6. Step 6: Final answer
    x = 30,185.81

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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.