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Finding the Fourth Proportional to 55,425.52, 83,137.71 and 13,872.52

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Solution

The fourth proportional to 55,425.52, 83,137.71 and 13,872.52 is: 20,808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,425.52 : 83,137.71 = 13,872.52 : x
  2. Step 2: Convert to fraction form
    55,425.52/83,137.71 = 13,872.52/x
  3. Step 3: Cross multiply
    55,425.52x = 83,137.71 × 13,872.52
  4. Step 4: Simplify right side
    55,425.52x = 1,153,329,544.73
  5. Step 5: Solve for x
    x = 1,153,329,544.73/55,425.52
  6. Step 6: Final answer
    x = 20,808.64

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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.