Home / 87,929.39-121,339.73-50,203.64

Finding the Fourth Proportional to 87,929.39, 121,339.73 and 50,203.64

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Solution

The fourth proportional to 87,929.39, 121,339.73 and 50,203.64 is: 69,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,929.39 : 121,339.73 = 50,203.64 : x
  2. Step 2: Convert to fraction form
    87,929.39/121,339.73 = 50,203.64/x
  3. Step 3: Cross multiply
    87,929.39x = 121,339.73 × 50,203.64
  4. Step 4: Simplify right side
    87,929.39x = 6,091,695,264.90
  5. Step 5: Solve for x
    x = 6,091,695,264.90/87,929.39
  6. Step 6: Final answer
    x = 69,279.40

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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.