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Finding the Fourth Proportional to 55,333.81, 82,958.19 and 28,651.20

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Solution

The fourth proportional to 55,333.81, 82,958.19 and 28,651.20 is: 42,954.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,333.81 : 82,958.19 = 28,651.20 : x
  2. Step 2: Convert to fraction form
    55,333.81/82,958.19 = 28,651.20/x
  3. Step 3: Cross multiply
    55,333.81x = 82,958.19 × 28,651.20
  4. Step 4: Simplify right side
    55,333.81x = 2,376,851,693.33
  5. Step 5: Solve for x
    x = 2,376,851,693.33/55,333.81
  6. Step 6: Final answer
    x = 42,954.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.