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Finding the Fourth Proportional to 55,266.99, 76,266 and 31,393.32

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Solution

The fourth proportional to 55,266.99, 76,266 and 31,393.32 is: 43,321.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,266.99 : 76,266 = 31,393.32 : x
  2. Step 2: Convert to fraction form
    55,266.99/76,266 = 31,393.32/x
  3. Step 3: Cross multiply
    55,266.99x = 76,266 × 31,393.32
  4. Step 4: Simplify right side
    55,266.99x = 2,394,242,943.12
  5. Step 5: Solve for x
    x = 2,394,242,943.12/55,266.99
  6. Step 6: Final answer
    x = 43,321.39

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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.