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Finding the Fourth Proportional to 53,979.40, 80,871.90 and 50,726.44

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Solution

The fourth proportional to 53,979.40, 80,871.90 and 50,726.44 is: 75,998.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,979.40 : 80,871.90 = 50,726.44 : x
  2. Step 2: Convert to fraction form
    53,979.40/80,871.90 = 50,726.44/x
  3. Step 3: Cross multiply
    53,979.40x = 80,871.90 × 50,726.44
  4. Step 4: Simplify right side
    53,979.40x = 4,102,343,583.04
  5. Step 5: Solve for x
    x = 4,102,343,583.04/53,979.40
  6. Step 6: Final answer
    x = 75,998.32

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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.