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Finding the Fourth Proportional to 89,872.80, 134,760.60 and 37,287.60

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Solution

The fourth proportional to 89,872.80, 134,760.60 and 37,287.60 is: 55,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,872.80 : 134,760.60 = 37,287.60 : x
  2. Step 2: Convert to fraction form
    89,872.80/134,760.60 = 37,287.60/x
  3. Step 3: Cross multiply
    89,872.80x = 134,760.60 × 37,287.60
  4. Step 4: Simplify right side
    89,872.80x = 5,024,899,348.56
  5. Step 5: Solve for x
    x = 5,024,899,348.56/89,872.80
  6. Step 6: Final answer
    x = 55,911.24

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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.