Home / 71,631.37-107,421.63-21,016.27

Finding the Fourth Proportional to 71,631.37, 107,421.63 and 21,016.27

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Solution

The fourth proportional to 71,631.37, 107,421.63 and 21,016.27 is: 31,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,631.37 : 107,421.63 = 21,016.27 : x
  2. Step 2: Convert to fraction form
    71,631.37/107,421.63 = 21,016.27/x
  3. Step 3: Cross multiply
    71,631.37x = 107,421.63 × 21,016.27
  4. Step 4: Simplify right side
    71,631.37x = 2,257,601,979.92
  5. Step 5: Solve for x
    x = 2,257,601,979.92/71,631.37
  6. Step 6: Final answer
    x = 31,516.95

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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.