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Finding the Fourth Proportional to 55,221.33, 76,202.73 and 31,347.66

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Solution

The fourth proportional to 55,221.33, 76,202.73 and 31,347.66 is: 43,258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,221.33 : 76,202.73 = 31,347.66 : x
  2. Step 2: Convert to fraction form
    55,221.33/76,202.73 = 31,347.66/x
  3. Step 3: Cross multiply
    55,221.33x = 76,202.73 × 31,347.66
  4. Step 4: Simplify right side
    55,221.33x = 2,388,777,271.11
  5. Step 5: Solve for x
    x = 2,388,777,271.11/55,221.33
  6. Step 6: Final answer
    x = 43,258.24

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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.