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Finding the Fourth Proportional to 87,548.80, 131,128.80 and 71,996.80

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Solution

The fourth proportional to 87,548.80, 131,128.80 and 71,996.80 is: 107,835.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,548.80 : 131,128.80 = 71,996.80 : x
  2. Step 2: Convert to fraction form
    87,548.80/131,128.80 = 71,996.80/x
  3. Step 3: Cross multiply
    87,548.80x = 131,128.80 × 71,996.80
  4. Step 4: Simplify right side
    87,548.80x = 9,440,853,987.84
  5. Step 5: Solve for x
    x = 9,440,853,987.84/87,548.80
  6. Step 6: Final answer
    x = 107,835.33

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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.