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Finding the Fourth Proportional to 86,103.90, 129,103.02 and 33,451.92

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Solution

The fourth proportional to 86,103.90, 129,103.02 and 33,451.92 is: 50,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,103.90 : 129,103.02 = 33,451.92 : x
  2. Step 2: Convert to fraction form
    86,103.90/129,103.02 = 33,451.92/x
  3. Step 3: Cross multiply
    86,103.90x = 129,103.02 × 33,451.92
  4. Step 4: Simplify right side
    86,103.90x = 4,318,743,896.80
  5. Step 5: Solve for x
    x = 4,318,743,896.80/86,103.90
  6. Step 6: Final answer
    x = 50,157.36

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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.