Home / 72,728.28-109,092.42-20,136.60

Finding the Fourth Proportional to 72,728.28, 109,092.42 and 20,136.60

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Solution

The fourth proportional to 72,728.28, 109,092.42 and 20,136.60 is: 30,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728.28 : 109,092.42 = 20,136.60 : x
  2. Step 2: Convert to fraction form
    72,728.28/109,092.42 = 20,136.60/x
  3. Step 3: Cross multiply
    72,728.28x = 109,092.42 × 20,136.60
  4. Step 4: Simplify right side
    72,728.28x = 2,196,750,424.57
  5. Step 5: Solve for x
    x = 2,196,750,424.57/72,728.28
  6. Step 6: Final answer
    x = 30,204.90

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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.