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Finding the Fourth Proportional to 66,918.25, 100,416.26 and 29,982.25

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Solution

The fourth proportional to 66,918.25, 100,416.26 and 29,982.25 is: 44,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.25 : 100,416.26 = 29,982.25 : x
  2. Step 2: Convert to fraction form
    66,918.25/100,416.26 = 29,982.25/x
  3. Step 3: Cross multiply
    66,918.25x = 100,416.26 × 29,982.25
  4. Step 4: Simplify right side
    66,918.25x = 3,010,705,411.39
  5. Step 5: Solve for x
    x = 3,010,705,411.39/66,918.25
  6. Step 6: Final answer
    x = 44,990.80

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1.5x scale

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.