Home / 87,509.60-131,329.20-57,917.60

Finding the Fourth Proportional to 87,509.60, 131,329.20 and 57,917.60

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Solution

The fourth proportional to 87,509.60, 131,329.20 and 57,917.60 is: 86,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.60 : 131,329.20 = 57,917.60 : x
  2. Step 2: Convert to fraction form
    87,509.60/131,329.20 = 57,917.60/x
  3. Step 3: Cross multiply
    87,509.60x = 131,329.20 × 57,917.60
  4. Step 4: Simplify right side
    87,509.60x = 7,606,272,073.92
  5. Step 5: Solve for x
    x = 7,606,272,073.92/87,509.60
  6. Step 6: Final answer
    x = 86,919.29

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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.