Home / 87,227.91-120,390.23-51,415.83

Finding the Fourth Proportional to 87,227.91, 120,390.23 and 51,415.83

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Solution

The fourth proportional to 87,227.91, 120,390.23 and 51,415.83 is: 70,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,227.91 : 120,390.23 = 51,415.83 : x
  2. Step 2: Convert to fraction form
    87,227.91/120,390.23 = 51,415.83/x
  3. Step 3: Cross multiply
    87,227.91x = 120,390.23 × 51,415.83
  4. Step 4: Simplify right side
    87,227.91x = 6,189,963,342.26
  5. Step 5: Solve for x
    x = 6,189,963,342.26/87,227.91
  6. Step 6: Final answer
    x = 70,963.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.