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Finding the Fourth Proportional to 85,751.22, 118,232.13 and 63,021

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Solution

The fourth proportional to 85,751.22, 118,232.13 and 63,021 is: 86,892.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,751.22 : 118,232.13 = 63,021 : x
  2. Step 2: Convert to fraction form
    85,751.22/118,232.13 = 63,021/x
  3. Step 3: Cross multiply
    85,751.22x = 118,232.13 × 63,021
  4. Step 4: Simplify right side
    85,751.22x = 7,451,107,064.73
  5. Step 5: Solve for x
    x = 7,451,107,064.73/85,751.22
  6. Step 6: Final answer
    x = 86,892.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.