Home / 87,663.97-120,976.34-51,856.40

Finding the Fourth Proportional to 87,663.97, 120,976.34 and 51,856.40

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Solution

The fourth proportional to 87,663.97, 120,976.34 and 51,856.40 is: 71,561.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,663.97 : 120,976.34 = 51,856.40 : x
  2. Step 2: Convert to fraction form
    87,663.97/120,976.34 = 51,856.40/x
  3. Step 3: Cross multiply
    87,663.97x = 120,976.34 × 51,856.40
  4. Step 4: Simplify right side
    87,663.97x = 6,273,397,520.73
  5. Step 5: Solve for x
    x = 6,273,397,520.73/87,663.97
  6. Step 6: Final answer
    x = 71,561.87

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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.