Home / 90,979.20-125,553.36-50,695.68

Finding the Fourth Proportional to 90,979.20, 125,553.36 and 50,695.68

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Solution

The fourth proportional to 90,979.20, 125,553.36 and 50,695.68 is: 69,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,979.20 : 125,553.36 = 50,695.68 : x
  2. Step 2: Convert to fraction form
    90,979.20/125,553.36 = 50,695.68/x
  3. Step 3: Cross multiply
    90,979.20x = 125,553.36 × 50,695.68
  4. Step 4: Simplify right side
    90,979.20x = 6,365,012,961.48
  5. Step 5: Solve for x
    x = 6,365,012,961.48/90,979.20
  6. Step 6: Final answer
    x = 69,961.19

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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.