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Finding the Fourth Proportional to 72,040.74, 99,406.33 and 41,821.26

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Solution

The fourth proportional to 72,040.74, 99,406.33 and 41,821.26 is: 57,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.74 : 99,406.33 = 41,821.26 : x
  2. Step 2: Convert to fraction form
    72,040.74/99,406.33 = 41,821.26/x
  3. Step 3: Cross multiply
    72,040.74x = 99,406.33 × 41,821.26
  4. Step 4: Simplify right side
    72,040.74x = 4,157,297,972.58
  5. Step 5: Solve for x
    x = 4,157,297,972.58/72,040.74
  6. Step 6: Final answer
    x = 57,707.60

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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.