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Finding the Fourth Proportional to 66,750.49, 100,135.46 and 20,007.01

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Solution

The fourth proportional to 66,750.49, 100,135.46 and 20,007.01 is: 30,013.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,750.49 : 100,135.46 = 20,007.01 : x
  2. Step 2: Convert to fraction form
    66,750.49/100,135.46 = 20,007.01/x
  3. Step 3: Cross multiply
    66,750.49x = 100,135.46 × 20,007.01
  4. Step 4: Simplify right side
    66,750.49x = 2,003,411,049.54
  5. Step 5: Solve for x
    x = 2,003,411,049.54/66,750.49
  6. Step 6: Final answer
    x = 30,013.43

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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.