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Finding the Fourth Proportional to 71,979.44, 107,969.16 and 36,896.72

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Solution

The fourth proportional to 71,979.44, 107,969.16 and 36,896.72 is: 55,345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.44 : 107,969.16 = 36,896.72 : x
  2. Step 2: Convert to fraction form
    71,979.44/107,969.16 = 36,896.72/x
  3. Step 3: Cross multiply
    71,979.44x = 107,969.16 × 36,896.72
  4. Step 4: Simplify right side
    71,979.44x = 3,983,707,865.16
  5. Step 5: Solve for x
    x = 3,983,707,865.16/71,979.44
  6. Step 6: Final answer
    x = 55,345.08

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1.5x scale

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.