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Finding the Fourth Proportional to 71,391.30, 107,054.55 and 27,003.30

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Solution

The fourth proportional to 71,391.30, 107,054.55 and 27,003.30 is: 40,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391.30 : 107,054.55 = 27,003.30 : x
  2. Step 2: Convert to fraction form
    71,391.30/107,054.55 = 27,003.30/x
  3. Step 3: Cross multiply
    71,391.30x = 107,054.55 × 27,003.30
  4. Step 4: Simplify right side
    71,391.30x = 2,890,826,130.02
  5. Step 5: Solve for x
    x = 2,890,826,130.02/71,391.30
  6. Step 6: Final answer
    x = 40,492.69

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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.