Home / 87,619.92-120,919.92-53,617.80

Finding the Fourth Proportional to 87,619.92, 120,919.92 and 53,617.80

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Solution

The fourth proportional to 87,619.92, 120,919.92 and 53,617.80 is: 73,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.92 : 120,919.92 = 53,617.80 : x
  2. Step 2: Convert to fraction form
    87,619.92/120,919.92 = 53,617.80/x
  3. Step 3: Cross multiply
    87,619.92x = 120,919.92 × 53,617.80
  4. Step 4: Simplify right side
    87,619.92x = 6,483,460,086.58
  5. Step 5: Solve for x
    x = 6,483,460,086.58/87,619.92
  6. Step 6: Final answer
    x = 73,995.28

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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.