Home / 87,531.20-131,296.80-28,368.80

Finding the Fourth Proportional to 87,531.20, 131,296.80 and 28,368.80

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Solution

The fourth proportional to 87,531.20, 131,296.80 and 28,368.80 is: 42,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,531.20 : 131,296.80 = 28,368.80 : x
  2. Step 2: Convert to fraction form
    87,531.20/131,296.80 = 28,368.80/x
  3. Step 3: Cross multiply
    87,531.20x = 131,296.80 × 28,368.80
  4. Step 4: Simplify right side
    87,531.20x = 3,724,732,659.84
  5. Step 5: Solve for x
    x = 3,724,732,659.84/87,531.20
  6. Step 6: Final answer
    x = 42,553.20

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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.