Home / 45,390.68-68,086.52-13,805.88

Finding the Fourth Proportional to 45,390.68, 68,086.52 and 13,805.88

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Solution

The fourth proportional to 45,390.68, 68,086.52 and 13,805.88 is: 20,708.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.68 : 68,086.52 = 13,805.88 : x
  2. Step 2: Convert to fraction form
    45,390.68/68,086.52 = 13,805.88/x
  3. Step 3: Cross multiply
    45,390.68x = 68,086.52 × 13,805.88
  4. Step 4: Simplify right side
    45,390.68x = 939,994,255.71
  5. Step 5: Solve for x
    x = 939,994,255.71/45,390.68
  6. Step 6: Final answer
    x = 20,708.97

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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.