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Finding the Fourth Proportional to 75,103.61, 103,647.97 and 43,274.55

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Solution

The fourth proportional to 75,103.61, 103,647.97 and 43,274.55 is: 59,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,103.61 : 103,647.97 = 43,274.55 : x
  2. Step 2: Convert to fraction form
    75,103.61/103,647.97 = 43,274.55/x
  3. Step 3: Cross multiply
    75,103.61x = 103,647.97 × 43,274.55
  4. Step 4: Simplify right side
    75,103.61x = 4,485,319,702.94
  5. Step 5: Solve for x
    x = 4,485,319,702.94/75,103.61
  6. Step 6: Final answer
    x = 59,721.76

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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.