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Finding the Fourth Proportional to 54,307.63, 81,474.20 and 16,865.77

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Solution

The fourth proportional to 54,307.63, 81,474.20 and 16,865.77 is: 25,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,307.63 : 81,474.20 = 16,865.77 : x
  2. Step 2: Convert to fraction form
    54,307.63/81,474.20 = 16,865.77/x
  3. Step 3: Cross multiply
    54,307.63x = 81,474.20 × 16,865.77
  4. Step 4: Simplify right side
    54,307.63x = 1,374,125,033.81
  5. Step 5: Solve for x
    x = 1,374,125,033.81/54,307.63
  6. Step 6: Final answer
    x = 25,302.61

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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.