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Finding the Fourth Proportional to 73,975.37, 110,963.87 and 21,385.31

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Solution

The fourth proportional to 73,975.37, 110,963.87 and 21,385.31 is: 32,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,975.37 : 110,963.87 = 21,385.31 : x
  2. Step 2: Convert to fraction form
    73,975.37/110,963.87 = 21,385.31/x
  3. Step 3: Cross multiply
    73,975.37x = 110,963.87 × 21,385.31
  4. Step 4: Simplify right side
    73,975.37x = 2,372,996,758.75
  5. Step 5: Solve for x
    x = 2,372,996,758.75/73,975.37
  6. Step 6: Final answer
    x = 32,078.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.