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Finding the Fourth Proportional to 81,101.44, 111,918.81 and 45,291.07

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Solution

The fourth proportional to 81,101.44, 111,918.81 and 45,291.07 is: 62,501.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,101.44 : 111,918.81 = 45,291.07 : x
  2. Step 2: Convert to fraction form
    81,101.44/111,918.81 = 45,291.07/x
  3. Step 3: Cross multiply
    81,101.44x = 111,918.81 × 45,291.07
  4. Step 4: Simplify right side
    81,101.44x = 5,068,922,658.03
  5. Step 5: Solve for x
    x = 5,068,922,658.03/81,101.44
  6. Step 6: Final answer
    x = 62,501.02

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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.