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Finding the Fourth Proportional to 103,807.91, 155,711.97 and 28,928.27

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Solution

The fourth proportional to 103,807.91, 155,711.97 and 28,928.27 is: 43,392.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.91 : 155,711.97 = 28,928.27 : x
  2. Step 2: Convert to fraction form
    103,807.91/155,711.97 = 28,928.27/x
  3. Step 3: Cross multiply
    103,807.91x = 155,711.97 × 28,928.27
  4. Step 4: Simplify right side
    103,807.91x = 4,504,478,299.67
  5. Step 5: Solve for x
    x = 4,504,478,299.67/103,807.91
  6. Step 6: Final answer
    x = 43,392.44

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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.