Home / 45,481.77-68,222.66-13,890.56

Finding the Fourth Proportional to 45,481.77, 68,222.66 and 13,890.56

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Solution

The fourth proportional to 45,481.77, 68,222.66 and 13,890.56 is: 20,835.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,481.77 : 68,222.66 = 13,890.56 : x
  2. Step 2: Convert to fraction form
    45,481.77/68,222.66 = 13,890.56/x
  3. Step 3: Cross multiply
    45,481.77x = 68,222.66 × 13,890.56
  4. Step 4: Simplify right side
    45,481.77x = 947,650,541.52
  5. Step 5: Solve for x
    x = 947,650,541.52/45,481.77
  6. Step 6: Final answer
    x = 20,835.83

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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.