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Finding the Fourth Proportional to 89,100.80, 133,687.20 and 39,190.40

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Solution

The fourth proportional to 89,100.80, 133,687.20 and 39,190.40 is: 58,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,100.80 : 133,687.20 = 39,190.40 : x
  2. Step 2: Convert to fraction form
    89,100.80/133,687.20 = 39,190.40/x
  3. Step 3: Cross multiply
    89,100.80x = 133,687.20 × 39,190.40
  4. Step 4: Simplify right side
    89,100.80x = 5,239,254,842.88
  5. Step 5: Solve for x
    x = 5,239,254,842.88/89,100.80
  6. Step 6: Final answer
    x = 58,801.43

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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.