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Finding the Fourth Proportional to 81,085.41, 111,896.82 and 45,276.03

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Solution

The fourth proportional to 81,085.41, 111,896.82 and 45,276.03 is: 62,480.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,085.41 : 111,896.82 = 45,276.03 : x
  2. Step 2: Convert to fraction form
    81,085.41/111,896.82 = 45,276.03/x
  3. Step 3: Cross multiply
    81,085.41x = 111,896.82 × 45,276.03
  4. Step 4: Simplify right side
    81,085.41x = 5,066,243,779.22
  5. Step 5: Solve for x
    x = 5,066,243,779.22/81,085.41
  6. Step 6: Final answer
    x = 62,480.34

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