Home / 87,778.56-131,409.36-54,391.32

Finding the Fourth Proportional to 87,778.56, 131,409.36 and 54,391.32

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Solution

The fourth proportional to 87,778.56, 131,409.36 and 54,391.32 is: 81,426.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,778.56 : 131,409.36 = 54,391.32 : x
  2. Step 2: Convert to fraction form
    87,778.56/131,409.36 = 54,391.32/x
  3. Step 3: Cross multiply
    87,778.56x = 131,409.36 × 54,391.32
  4. Step 4: Simplify right side
    87,778.56x = 7,147,528,550.76
  5. Step 5: Solve for x
    x = 7,147,528,550.76/87,778.56
  6. Step 6: Final answer
    x = 81,426.81

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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.