Home / 87,619.20-131,428.80-43,267.20

Finding the Fourth Proportional to 87,619.20, 131,428.80 and 43,267.20

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Solution

The fourth proportional to 87,619.20, 131,428.80 and 43,267.20 is: 64,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.20 : 131,428.80 = 43,267.20 : x
  2. Step 2: Convert to fraction form
    87,619.20/131,428.80 = 43,267.20/x
  3. Step 3: Cross multiply
    87,619.20x = 131,428.80 × 43,267.20
  4. Step 4: Simplify right side
    87,619.20x = 5,686,556,175.36
  5. Step 5: Solve for x
    x = 5,686,556,175.36/87,619.20
  6. Step 6: Final answer
    x = 64,900.80

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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.