Home / 72,736.11-109,104.30-20,145.74

Finding the Fourth Proportional to 72,736.11, 109,104.30 and 20,145.74

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Solution

The fourth proportional to 72,736.11, 109,104.30 and 20,145.74 is: 30,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.11 : 109,104.30 = 20,145.74 : x
  2. Step 2: Convert to fraction form
    72,736.11/109,104.30 = 20,145.74/x
  3. Step 3: Cross multiply
    72,736.11x = 109,104.30 × 20,145.74
  4. Step 4: Simplify right side
    72,736.11x = 2,197,986,315.16
  5. Step 5: Solve for x
    x = 2,197,986,315.16/72,736.11
  6. Step 6: Final answer
    x = 30,218.64

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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.