Home / 87,849.36-121,240.80-50,129.28

Finding the Fourth Proportional to 87,849.36, 121,240.80 and 50,129.28

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Solution

The fourth proportional to 87,849.36, 121,240.80 and 50,129.28 is: 69,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,849.36 : 121,240.80 = 50,129.28 : x
  2. Step 2: Convert to fraction form
    87,849.36/121,240.80 = 50,129.28/x
  3. Step 3: Cross multiply
    87,849.36x = 121,240.80 × 50,129.28
  4. Step 4: Simplify right side
    87,849.36x = 6,077,714,010.62
  5. Step 5: Solve for x
    x = 6,077,714,010.62/87,849.36
  6. Step 6: Final answer
    x = 69,183.36

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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.