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Finding the Fourth Proportional to 66,860.98, 100,223.93 and 41,918.54

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Solution

The fourth proportional to 66,860.98, 100,223.93 and 41,918.54 is: 62,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,860.98 : 100,223.93 = 41,918.54 : x
  2. Step 2: Convert to fraction form
    66,860.98/100,223.93 = 41,918.54/x
  3. Step 3: Cross multiply
    66,860.98x = 100,223.93 × 41,918.54
  4. Step 4: Simplify right side
    66,860.98x = 4,201,240,422.34
  5. Step 5: Solve for x
    x = 4,201,240,422.34/66,860.98
  6. Step 6: Final answer
    x = 62,835.46

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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.