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Finding the Fourth Proportional to 71,025.67, 98,020.97 and 40,821.54

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Solution

The fourth proportional to 71,025.67, 98,020.97 and 40,821.54 is: 56,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,025.67 : 98,020.97 = 40,821.54 : x
  2. Step 2: Convert to fraction form
    71,025.67/98,020.97 = 40,821.54/x
  3. Step 3: Cross multiply
    71,025.67x = 98,020.97 × 40,821.54
  4. Step 4: Simplify right side
    71,025.67x = 4,001,366,947.69
  5. Step 5: Solve for x
    x = 4,001,366,947.69/71,025.67
  6. Step 6: Final answer
    x = 56,336.91

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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.