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Finding the Fourth Proportional to 71,051.30, 106,634.55 and 68,747.30

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Solution

The fourth proportional to 71,051.30, 106,634.55 and 68,747.30 is: 103,176.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,051.30 : 106,634.55 = 68,747.30 : x
  2. Step 2: Convert to fraction form
    71,051.30/106,634.55 = 68,747.30/x
  3. Step 3: Cross multiply
    71,051.30x = 106,634.55 × 68,747.30
  4. Step 4: Simplify right side
    71,051.30x = 7,330,837,399.22
  5. Step 5: Solve for x
    x = 7,330,837,399.22/71,051.30
  6. Step 6: Final answer
    x = 103,176.68

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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.