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Finding the Fourth Proportional to 71,203.50, 106,735.38 and 39,628.68

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Solution

The fourth proportional to 71,203.50, 106,735.38 and 39,628.68 is: 59,404.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,203.50 : 106,735.38 = 39,628.68 : x
  2. Step 2: Convert to fraction form
    71,203.50/106,735.38 = 39,628.68/x
  3. Step 3: Cross multiply
    71,203.50x = 106,735.38 × 39,628.68
  4. Step 4: Simplify right side
    71,203.50x = 4,229,782,218.70
  5. Step 5: Solve for x
    x = 4,229,782,218.70/71,203.50
  6. Step 6: Final answer
    x = 59,404.13

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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.