Home / 87,007.20-130,251.60-51,928.80

Finding the Fourth Proportional to 87,007.20, 130,251.60 and 51,928.80

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Solution

The fourth proportional to 87,007.20, 130,251.60 and 51,928.80 is: 77,738.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,007.20 : 130,251.60 = 51,928.80 : x
  2. Step 2: Convert to fraction form
    87,007.20/130,251.60 = 51,928.80/x
  3. Step 3: Cross multiply
    87,007.20x = 130,251.60 × 51,928.80
  4. Step 4: Simplify right side
    87,007.20x = 6,763,809,286.08
  5. Step 5: Solve for x
    x = 6,763,809,286.08/87,007.20
  6. Step 6: Final answer
    x = 77,738.50

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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.