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Finding the Fourth Proportional to 55,272.48, 82,908.72 and 13,719.48

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Solution

The fourth proportional to 55,272.48, 82,908.72 and 13,719.48 is: 20,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,272.48 : 82,908.72 = 13,719.48 : x
  2. Step 2: Convert to fraction form
    55,272.48/82,908.72 = 13,719.48/x
  3. Step 3: Cross multiply
    55,272.48x = 82,908.72 × 13,719.48
  4. Step 4: Simplify right side
    55,272.48x = 1,137,464,525.87
  5. Step 5: Solve for x
    x = 1,137,464,525.87/55,272.48
  6. Step 6: Final answer
    x = 20,579.22

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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.