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Finding the Fourth Proportional to 55,554.80, 76,665 and 30,404

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Solution

The fourth proportional to 55,554.80, 76,665 and 30,404 is: 41,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,554.80 : 76,665 = 30,404 : x
  2. Step 2: Convert to fraction form
    55,554.80/76,665 = 30,404/x
  3. Step 3: Cross multiply
    55,554.80x = 76,665 × 30,404
  4. Step 4: Simplify right side
    55,554.80x = 2,330,922,660
  5. Step 5: Solve for x
    x = 2,330,922,660/55,554.80
  6. Step 6: Final answer
    x = 41,957.18

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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.