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Finding the Fourth Proportional to 39,676.47, 59,485.50 and 18,914.55

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Solution

The fourth proportional to 39,676.47, 59,485.50 and 18,914.55 is: 28,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,676.47 : 59,485.50 = 18,914.55 : x
  2. Step 2: Convert to fraction form
    39,676.47/59,485.50 = 18,914.55/x
  3. Step 3: Cross multiply
    39,676.47x = 59,485.50 × 18,914.55
  4. Step 4: Simplify right side
    39,676.47x = 1,125,141,464.03
  5. Step 5: Solve for x
    x = 1,125,141,464.03/39,676.47
  6. Step 6: Final answer
    x = 28,357.90

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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.