Home / 87,625.39-120,963.40-51,321.79

Finding the Fourth Proportional to 87,625.39, 120,963.40 and 51,321.79

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Solution

The fourth proportional to 87,625.39, 120,963.40 and 51,321.79 is: 70,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,625.39 : 120,963.40 = 51,321.79 : x
  2. Step 2: Convert to fraction form
    87,625.39/120,963.40 = 51,321.79/x
  3. Step 3: Cross multiply
    87,625.39x = 120,963.40 × 51,321.79
  4. Step 4: Simplify right side
    87,625.39x = 6,208,058,386.59
  5. Step 5: Solve for x
    x = 6,208,058,386.59/87,625.39
  6. Step 6: Final answer
    x = 70,847.72

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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.