Home / 87,616-120,910.26-49,890.28

Finding the Fourth Proportional to 87,616, 120,910.26 and 49,890.28

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Solution

The fourth proportional to 87,616, 120,910.26 and 49,890.28 is: 68,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616 : 120,910.26 = 49,890.28 : x
  2. Step 2: Convert to fraction form
    87,616/120,910.26 = 49,890.28/x
  3. Step 3: Cross multiply
    87,616x = 120,910.26 × 49,890.28
  4. Step 4: Simplify right side
    87,616x = 6,032,246,726.27
  5. Step 5: Solve for x
    x = 6,032,246,726.27/87,616
  6. Step 6: Final answer
    x = 68,848.69

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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.