Home / 87,879.36-121,282.20-50,159.28

Finding the Fourth Proportional to 87,879.36, 121,282.20 and 50,159.28

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Solution

The fourth proportional to 87,879.36, 121,282.20 and 50,159.28 is: 69,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.36 : 121,282.20 = 50,159.28 : x
  2. Step 2: Convert to fraction form
    87,879.36/121,282.20 = 50,159.28/x
  3. Step 3: Cross multiply
    87,879.36x = 121,282.20 × 50,159.28
  4. Step 4: Simplify right side
    87,879.36x = 6,083,427,828.82
  5. Step 5: Solve for x
    x = 6,083,427,828.82/87,879.36
  6. Step 6: Final answer
    x = 69,224.76

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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.