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Finding the Fourth Proportional to 66,180.70, 99,260.25 and 18,798.94

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Solution

The fourth proportional to 66,180.70, 99,260.25 and 18,798.94 is: 28,195.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,180.70 : 99,260.25 = 18,798.94 : x
  2. Step 2: Convert to fraction form
    66,180.70/99,260.25 = 18,798.94/x
  3. Step 3: Cross multiply
    66,180.70x = 99,260.25 × 18,798.94
  4. Step 4: Simplify right side
    66,180.70x = 1,865,987,484.14
  5. Step 5: Solve for x
    x = 1,865,987,484.14/66,180.70
  6. Step 6: Final answer
    x = 28,195.34

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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.