Home / 87,208.84-120,371.20-51,422.68

Finding the Fourth Proportional to 87,208.84, 120,371.20 and 51,422.68

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Solution

The fourth proportional to 87,208.84, 120,371.20 and 51,422.68 is: 70,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,208.84 : 120,371.20 = 51,422.68 : x
  2. Step 2: Convert to fraction form
    87,208.84/120,371.20 = 51,422.68/x
  3. Step 3: Cross multiply
    87,208.84x = 120,371.20 × 51,422.68
  4. Step 4: Simplify right side
    87,208.84x = 6,189,809,698.82
  5. Step 5: Solve for x
    x = 6,189,809,698.82/87,208.84
  6. Step 6: Final answer
    x = 70,976.86

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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.