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Finding the Fourth Proportional to 33,107.50, 45,688.35 and 18,203.50

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Solution

The fourth proportional to 33,107.50, 45,688.35 and 18,203.50 is: 25,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,107.50 : 45,688.35 = 18,203.50 : x
  2. Step 2: Convert to fraction form
    33,107.50/45,688.35 = 18,203.50/x
  3. Step 3: Cross multiply
    33,107.50x = 45,688.35 × 18,203.50
  4. Step 4: Simplify right side
    33,107.50x = 831,687,879.23
  5. Step 5: Solve for x
    x = 831,687,879.23/33,107.50
  6. Step 6: Final answer
    x = 25,120.83

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1.5x scale

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.