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Finding the Fourth Proportional to 66,208.54, 99,179.84 and 30,619.97

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Solution

The fourth proportional to 66,208.54, 99,179.84 and 30,619.97 is: 45,868.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.54 : 99,179.84 = 30,619.97 : x
  2. Step 2: Convert to fraction form
    66,208.54/99,179.84 = 30,619.97/x
  3. Step 3: Cross multiply
    66,208.54x = 99,179.84 × 30,619.97
  4. Step 4: Simplify right side
    66,208.54x = 3,036,883,572.30
  5. Step 5: Solve for x
    x = 3,036,883,572.30/66,208.54
  6. Step 6: Final answer
    x = 45,868.46

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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.