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Finding the Fourth Proportional to 71,471.36, 98,636.52 and 39,650.50

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Solution

The fourth proportional to 71,471.36, 98,636.52 and 39,650.50 is: 54,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,471.36 : 98,636.52 = 39,650.50 : x
  2. Step 2: Convert to fraction form
    71,471.36/98,636.52 = 39,650.50/x
  3. Step 3: Cross multiply
    71,471.36x = 98,636.52 × 39,650.50
  4. Step 4: Simplify right side
    71,471.36x = 3,910,987,336.26
  5. Step 5: Solve for x
    x = 3,910,987,336.26/71,471.36
  6. Step 6: Final answer
    x = 54,721.04

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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.