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Finding the Fourth Proportional to 85,949.75, 128,957.43 and 33,363.34

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Solution

The fourth proportional to 85,949.75, 128,957.43 and 33,363.34 is: 50,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,949.75 : 128,957.43 = 33,363.34 : x
  2. Step 2: Convert to fraction form
    85,949.75/128,957.43 = 33,363.34/x
  3. Step 3: Cross multiply
    85,949.75x = 128,957.43 × 33,363.34
  4. Step 4: Simplify right side
    85,949.75x = 4,302,450,582.62
  5. Step 5: Solve for x
    x = 4,302,450,582.62/85,949.75
  6. Step 6: Final answer
    x = 50,057.74

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1.5x scale

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.