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Finding the Fourth Proportional to 69,871.94, 96,406.88 and 39,650.44

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Solution

The fourth proportional to 69,871.94, 96,406.88 and 39,650.44 is: 54,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,871.94 : 96,406.88 = 39,650.44 : x
  2. Step 2: Convert to fraction form
    69,871.94/96,406.88 = 39,650.44/x
  3. Step 3: Cross multiply
    69,871.94x = 96,406.88 × 39,650.44
  4. Step 4: Simplify right side
    69,871.94x = 3,822,575,211.03
  5. Step 5: Solve for x
    x = 3,822,575,211.03/69,871.94
  6. Step 6: Final answer
    x = 54,708.30

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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.