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Finding the Fourth Proportional to 83,409.40, 125,114.10 and 73,786.60

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Solution

The fourth proportional to 83,409.40, 125,114.10 and 73,786.60 is: 110,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,409.40 : 125,114.10 = 73,786.60 : x
  2. Step 2: Convert to fraction form
    83,409.40/125,114.10 = 73,786.60/x
  3. Step 3: Cross multiply
    83,409.40x = 125,114.10 × 73,786.60
  4. Step 4: Simplify right side
    83,409.40x = 9,231,744,051.06
  5. Step 5: Solve for x
    x = 9,231,744,051.06/83,409.40
  6. Step 6: Final answer
    x = 110,679.90

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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.