Home / 45,243.45-67,891.64-18,945.99

Finding the Fourth Proportional to 45,243.45, 67,891.64 and 18,945.99

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Solution

The fourth proportional to 45,243.45, 67,891.64 and 18,945.99 is: 28,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243.45 : 67,891.64 = 18,945.99 : x
  2. Step 2: Convert to fraction form
    45,243.45/67,891.64 = 18,945.99/x
  3. Step 3: Cross multiply
    45,243.45x = 67,891.64 × 18,945.99
  4. Step 4: Simplify right side
    45,243.45x = 1,286,274,237.79
  5. Step 5: Solve for x
    x = 1,286,274,237.79/45,243.45
  6. Step 6: Final answer
    x = 28,430.07

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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.