Home / 90,809.28-125,305.92-50,512.86

Finding the Fourth Proportional to 90,809.28, 125,305.92 and 50,512.86

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Solution

The fourth proportional to 90,809.28, 125,305.92 and 50,512.86 is: 69,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,809.28 : 125,305.92 = 50,512.86 : x
  2. Step 2: Convert to fraction form
    90,809.28/125,305.92 = 50,512.86/x
  3. Step 3: Cross multiply
    90,809.28x = 125,305.92 × 50,512.86
  4. Step 4: Simplify right side
    90,809.28x = 6,329,560,394.13
  5. Step 5: Solve for x
    x = 6,329,560,394.13/90,809.28
  6. Step 6: Final answer
    x = 69,701.69

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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.