Home / 90,811.28-125,308.68-50,514.86

Finding the Fourth Proportional to 90,811.28, 125,308.68 and 50,514.86

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Solution

The fourth proportional to 90,811.28, 125,308.68 and 50,514.86 is: 69,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.28 : 125,308.68 = 50,514.86 : x
  2. Step 2: Convert to fraction form
    90,811.28/125,308.68 = 50,514.86/x
  3. Step 3: Cross multiply
    90,811.28x = 125,308.68 × 50,514.86
  4. Step 4: Simplify right side
    90,811.28x = 6,329,950,426.98
  5. Step 5: Solve for x
    x = 6,329,950,426.98/90,811.28
  6. Step 6: Final answer
    x = 69,704.45

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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.