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Finding the Fourth Proportional to 45,492.60, 68,222.70 and 20,544.60

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Solution

The fourth proportional to 45,492.60, 68,222.70 and 20,544.60 is: 30,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,492.60 : 68,222.70 = 20,544.60 : x
  2. Step 2: Convert to fraction form
    45,492.60/68,222.70 = 20,544.60/x
  3. Step 3: Cross multiply
    45,492.60x = 68,222.70 × 20,544.60
  4. Step 4: Simplify right side
    45,492.60x = 1,401,608,082.42
  5. Step 5: Solve for x
    x = 1,401,608,082.42/45,492.60
  6. Step 6: Final answer
    x = 30,809.58

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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.