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Finding the Fourth Proportional to 66,505.50, 99,803.48 and 27,069.80

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Solution

The fourth proportional to 66,505.50, 99,803.48 and 27,069.80 is: 40,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.50 : 99,803.48 = 27,069.80 : x
  2. Step 2: Convert to fraction form
    66,505.50/99,803.48 = 27,069.80/x
  3. Step 3: Cross multiply
    66,505.50x = 99,803.48 × 27,069.80
  4. Step 4: Simplify right side
    66,505.50x = 2,701,659,608.54
  5. Step 5: Solve for x
    x = 2,701,659,608.54/66,505.50
  6. Step 6: Final answer
    x = 40,623.10

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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.