Home / 45,475.82-68,216.26-13,890.68

Finding the Fourth Proportional to 45,475.82, 68,216.26 and 13,890.68

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Solution

The fourth proportional to 45,475.82, 68,216.26 and 13,890.68 is: 20,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,475.82 : 68,216.26 = 13,890.68 : x
  2. Step 2: Convert to fraction form
    45,475.82/68,216.26 = 13,890.68/x
  3. Step 3: Cross multiply
    45,475.82x = 68,216.26 × 13,890.68
  4. Step 4: Simplify right side
    45,475.82x = 947,570,238.46
  5. Step 5: Solve for x
    x = 947,570,238.46/45,475.82
  6. Step 6: Final answer
    x = 20,836.79

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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.