Home / 72,728.16-109,092.24-20,137.62

Finding the Fourth Proportional to 72,728.16, 109,092.24 and 20,137.62

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Solution

The fourth proportional to 72,728.16, 109,092.24 and 20,137.62 is: 30,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728.16 : 109,092.24 = 20,137.62 : x
  2. Step 2: Convert to fraction form
    72,728.16/109,092.24 = 20,137.62/x
  3. Step 3: Cross multiply
    72,728.16x = 109,092.24 × 20,137.62
  4. Step 4: Simplify right side
    72,728.16x = 2,196,858,074.07
  5. Step 5: Solve for x
    x = 2,196,858,074.07/72,728.16
  6. Step 6: Final answer
    x = 30,206.43

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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.