Home / 45,289.49-67,908.32-18,972.05

Finding the Fourth Proportional to 45,289.49, 67,908.32 and 18,972.05

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Solution

The fourth proportional to 45,289.49, 67,908.32 and 18,972.05 is: 28,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,289.49 : 67,908.32 = 18,972.05 : x
  2. Step 2: Convert to fraction form
    45,289.49/67,908.32 = 18,972.05/x
  3. Step 3: Cross multiply
    45,289.49x = 67,908.32 × 18,972.05
  4. Step 4: Simplify right side
    45,289.49x = 1,288,359,947.60
  5. Step 5: Solve for x
    x = 1,288,359,947.60/45,289.49
  6. Step 6: Final answer
    x = 28,447.22

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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.