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Finding the Fourth Proportional to 45,462.72, 68,189.76 and 15,880.80

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Solution

The fourth proportional to 45,462.72, 68,189.76 and 15,880.80 is: 23,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,462.72 : 68,189.76 = 15,880.80 : x
  2. Step 2: Convert to fraction form
    45,462.72/68,189.76 = 15,880.80/x
  3. Step 3: Cross multiply
    45,462.72x = 68,189.76 × 15,880.80
  4. Step 4: Simplify right side
    45,462.72x = 1,082,907,940.61
  5. Step 5: Solve for x
    x = 1,082,907,940.61/45,462.72
  6. Step 6: Final answer
    x = 23,819.69

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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.