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Finding the Fourth Proportional to 66,982.59, 100,473.83 and 20,235.45

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Solution

The fourth proportional to 66,982.59, 100,473.83 and 20,235.45 is: 30,353.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,982.59 : 100,473.83 = 20,235.45 : x
  2. Step 2: Convert to fraction form
    66,982.59/100,473.83 = 20,235.45/x
  3. Step 3: Cross multiply
    66,982.59x = 100,473.83 × 20,235.45
  4. Step 4: Simplify right side
    66,982.59x = 2,033,133,062.10
  5. Step 5: Solve for x
    x = 2,033,133,062.10/66,982.59
  6. Step 6: Final answer
    x = 30,353.16

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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.