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Finding the Fourth Proportional to 49,147.25, 73,720.88 and 12,211.25

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Solution

The fourth proportional to 49,147.25, 73,720.88 and 12,211.25 is: 18,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,147.25 : 73,720.88 = 12,211.25 : x
  2. Step 2: Convert to fraction form
    49,147.25/73,720.88 = 12,211.25/x
  3. Step 3: Cross multiply
    49,147.25x = 73,720.88 × 12,211.25
  4. Step 4: Simplify right side
    49,147.25x = 900,224,034.84
  5. Step 5: Solve for x
    x = 900,224,034.84/49,147.25
  6. Step 6: Final answer
    x = 18,316.88

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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.