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Finding the Fourth Proportional to 68,341.71, 102,550.85 and 28,928.33

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Solution

The fourth proportional to 68,341.71, 102,550.85 and 28,928.33 is: 43,408.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,341.71 : 102,550.85 = 28,928.33 : x
  2. Step 2: Convert to fraction form
    68,341.71/102,550.85 = 28,928.33/x
  3. Step 3: Cross multiply
    68,341.71x = 102,550.85 × 28,928.33
  4. Step 4: Simplify right side
    68,341.71x = 2,966,624,173.18
  5. Step 5: Solve for x
    x = 2,966,624,173.18/68,341.71
  6. Step 6: Final answer
    x = 43,408.69

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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.