Home / 87,530.10-131,453.55-76,643.70

Finding the Fourth Proportional to 87,530.10, 131,453.55 and 76,643.70

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Solution

The fourth proportional to 87,530.10, 131,453.55 and 76,643.70 is: 115,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,530.10 : 131,453.55 = 76,643.70 : x
  2. Step 2: Convert to fraction form
    87,530.10/131,453.55 = 76,643.70/x
  3. Step 3: Cross multiply
    87,530.10x = 131,453.55 × 76,643.70
  4. Step 4: Simplify right side
    87,530.10x = 10,075,086,450.14
  5. Step 5: Solve for x
    x = 10,075,086,450.14/87,530.10
  6. Step 6: Final answer
    x = 115,104.25

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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.