Home / 45,390.56-68,086.30-13,805.74

Finding the Fourth Proportional to 45,390.56, 68,086.30 and 13,805.74

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Solution

The fourth proportional to 45,390.56, 68,086.30 and 13,805.74 is: 20,708.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.56 : 68,086.30 = 13,805.74 : x
  2. Step 2: Convert to fraction form
    45,390.56/68,086.30 = 13,805.74/x
  3. Step 3: Cross multiply
    45,390.56x = 68,086.30 × 13,805.74
  4. Step 4: Simplify right side
    45,390.56x = 939,981,755.36
  5. Step 5: Solve for x
    x = 939,981,755.36/45,390.56
  6. Step 6: Final answer
    x = 20,708.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.