Home / 87,529.60-131,452.80-76,643.20

Finding the Fourth Proportional to 87,529.60, 131,452.80 and 76,643.20

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Solution

The fourth proportional to 87,529.60, 131,452.80 and 76,643.20 is: 115,103.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,529.60 : 131,452.80 = 76,643.20 : x
  2. Step 2: Convert to fraction form
    87,529.60/131,452.80 = 76,643.20/x
  3. Step 3: Cross multiply
    87,529.60x = 131,452.80 × 76,643.20
  4. Step 4: Simplify right side
    87,529.60x = 10,074,963,240.96
  5. Step 5: Solve for x
    x = 10,074,963,240.96/87,529.60
  6. Step 6: Final answer
    x = 115,103.50

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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.