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Finding the Fourth Proportional to 55,396.39, 76,447.02 and 34,187.89

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Solution

The fourth proportional to 55,396.39, 76,447.02 and 34,187.89 is: 47,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,396.39 : 76,447.02 = 34,187.89 : x
  2. Step 2: Convert to fraction form
    55,396.39/76,447.02 = 34,187.89/x
  3. Step 3: Cross multiply
    55,396.39x = 76,447.02 × 34,187.89
  4. Step 4: Simplify right side
    55,396.39x = 2,613,562,310.59
  5. Step 5: Solve for x
    x = 2,613,562,310.59/55,396.39
  6. Step 6: Final answer
    x = 47,179.29

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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.