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Finding the Fourth Proportional to 73,083.88, 100,771.68 and 53,991.28

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Solution

The fourth proportional to 73,083.88, 100,771.68 and 53,991.28 is: 74,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,083.88 : 100,771.68 = 53,991.28 : x
  2. Step 2: Convert to fraction form
    73,083.88/100,771.68 = 53,991.28/x
  3. Step 3: Cross multiply
    73,083.88x = 100,771.68 × 53,991.28
  4. Step 4: Simplify right side
    73,083.88x = 5,440,791,990.95
  5. Step 5: Solve for x
    x = 5,440,791,990.95/73,083.88
  6. Step 6: Final answer
    x = 74,445.86

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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.