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Finding the Fourth Proportional to 66,893.22, 100,358.28 and 54,382.14

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Solution

The fourth proportional to 66,893.22, 100,358.28 and 54,382.14 is: 81,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,893.22 : 100,358.28 = 54,382.14 : x
  2. Step 2: Convert to fraction form
    66,893.22/100,358.28 = 54,382.14/x
  3. Step 3: Cross multiply
    66,893.22x = 100,358.28 × 54,382.14
  4. Step 4: Simplify right side
    66,893.22x = 5,457,698,033.12
  5. Step 5: Solve for x
    x = 5,457,698,033.12/66,893.22
  6. Step 6: Final answer
    x = 81,588.21

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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.