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Finding the Fourth Proportional to 55,471.50, 76,550.94 and 30,321

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Solution

The fourth proportional to 55,471.50, 76,550.94 and 30,321 is: 41,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,471.50 : 76,550.94 = 30,321 : x
  2. Step 2: Convert to fraction form
    55,471.50/76,550.94 = 30,321/x
  3. Step 3: Cross multiply
    55,471.50x = 76,550.94 × 30,321
  4. Step 4: Simplify right side
    55,471.50x = 2,321,101,051.74
  5. Step 5: Solve for x
    x = 2,321,101,051.74/55,471.50
  6. Step 6: Final answer
    x = 41,843.13

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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.