Home / 87,929.36-121,351.20-50,209.28

Finding the Fourth Proportional to 87,929.36, 121,351.20 and 50,209.28

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Solution

The fourth proportional to 87,929.36, 121,351.20 and 50,209.28 is: 69,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,929.36 : 121,351.20 = 50,209.28 : x
  2. Step 2: Convert to fraction form
    87,929.36/121,351.20 = 50,209.28/x
  3. Step 3: Cross multiply
    87,929.36x = 121,351.20 × 50,209.28
  4. Step 4: Simplify right side
    87,929.36x = 6,092,956,379.14
  5. Step 5: Solve for x
    x = 6,092,956,379.14/87,929.36
  6. Step 6: Final answer
    x = 69,293.76

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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.