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Finding the Fourth Proportional to 43,542, 60,100.79 and 28,436.99

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Solution

The fourth proportional to 43,542, 60,100.79 and 28,436.99 is: 39,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,542 : 60,100.79 = 28,436.99 : x
  2. Step 2: Convert to fraction form
    43,542/60,100.79 = 28,436.99/x
  3. Step 3: Cross multiply
    43,542x = 60,100.79 × 28,436.99
  4. Step 4: Simplify right side
    43,542x = 1,709,085,121.53
  5. Step 5: Solve for x
    x = 1,709,085,121.53/43,542
  6. Step 6: Final answer
    x = 39,251.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.