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Finding the Fourth Proportional to 66,039.70, 99,072.35 and 33,207.70

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Solution

The fourth proportional to 66,039.70, 99,072.35 and 33,207.70 is: 49,817.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,039.70 : 99,072.35 = 33,207.70 : x
  2. Step 2: Convert to fraction form
    66,039.70/99,072.35 = 33,207.70/x
  3. Step 3: Cross multiply
    66,039.70x = 99,072.35 × 33,207.70
  4. Step 4: Simplify right side
    66,039.70x = 3,289,964,877.10
  5. Step 5: Solve for x
    x = 3,289,964,877.10/66,039.70
  6. Step 6: Final answer
    x = 49,817.99

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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.