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Finding the Fourth Proportional to 55,230.90, 76,216.35 and 31,358.89

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Solution

The fourth proportional to 55,230.90, 76,216.35 and 31,358.89 is: 43,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,230.90 : 76,216.35 = 31,358.89 : x
  2. Step 2: Convert to fraction form
    55,230.90/76,216.35 = 31,358.89/x
  3. Step 3: Cross multiply
    55,230.90x = 76,216.35 × 31,358.89
  4. Step 4: Simplify right side
    55,230.90x = 2,390,060,135.85
  5. Step 5: Solve for x
    x = 2,390,060,135.85/55,230.90
  6. Step 6: Final answer
    x = 43,273.97

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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.