Home / 87,120.77-130,761.36-53,905.73

Finding the Fourth Proportional to 87,120.77, 130,761.36 and 53,905.73

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Solution

The fourth proportional to 87,120.77, 130,761.36 and 53,905.73 is: 80,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120.77 : 130,761.36 = 53,905.73 : x
  2. Step 2: Convert to fraction form
    87,120.77/130,761.36 = 53,905.73/x
  3. Step 3: Cross multiply
    87,120.77x = 130,761.36 × 53,905.73
  4. Step 4: Simplify right side
    87,120.77x = 7,048,785,912.79
  5. Step 5: Solve for x
    x = 7,048,785,912.79/87,120.77
  6. Step 6: Final answer
    x = 80,908.22

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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.