Home / 45,945.45-68,918.13-12,665.79

Finding the Fourth Proportional to 45,945.45, 68,918.13 and 12,665.79

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Solution

The fourth proportional to 45,945.45, 68,918.13 and 12,665.79 is: 18,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,945.45 : 68,918.13 = 12,665.79 : x
  2. Step 2: Convert to fraction form
    45,945.45/68,918.13 = 12,665.79/x
  3. Step 3: Cross multiply
    45,945.45x = 68,918.13 × 12,665.79
  4. Step 4: Simplify right side
    45,945.45x = 872,902,561.77
  5. Step 5: Solve for x
    x = 872,902,561.77/45,945.45
  6. Step 6: Final answer
    x = 18,998.67

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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.