Home / 47,979-71,979.30-18,410.76

Finding the Fourth Proportional to 47,979, 71,979.30 and 18,410.76

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Solution

The fourth proportional to 47,979, 71,979.30 and 18,410.76 is: 27,620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,979 : 71,979.30 = 18,410.76 : x
  2. Step 2: Convert to fraction form
    47,979/71,979.30 = 18,410.76/x
  3. Step 3: Cross multiply
    47,979x = 71,979.30 × 18,410.76
  4. Step 4: Simplify right side
    47,979x = 1,325,193,617.27
  5. Step 5: Solve for x
    x = 1,325,193,617.27/47,979
  6. Step 6: Final answer
    x = 27,620.28

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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.