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Finding the Fourth Proportional to 30,022.57, 41,409.66 and 21,072.07

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Solution

The fourth proportional to 30,022.57, 41,409.66 and 21,072.07 is: 29,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,022.57 : 41,409.66 = 21,072.07 : x
  2. Step 2: Convert to fraction form
    30,022.57/41,409.66 = 21,072.07/x
  3. Step 3: Cross multiply
    30,022.57x = 41,409.66 × 21,072.07
  4. Step 4: Simplify right side
    30,022.57x = 872,587,254.20
  5. Step 5: Solve for x
    x = 872,587,254.20/30,022.57
  6. Step 6: Final answer
    x = 29,064.38

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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.