Home / 52,581.38-78,872.24-13,138.49

Finding the Fourth Proportional to 52,581.38, 78,872.24 and 13,138.49

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Solution

The fourth proportional to 52,581.38, 78,872.24 and 13,138.49 is: 19,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,581.38 : 78,872.24 = 13,138.49 : x
  2. Step 2: Convert to fraction form
    52,581.38/78,872.24 = 13,138.49/x
  3. Step 3: Cross multiply
    52,581.38x = 78,872.24 × 13,138.49
  4. Step 4: Simplify right side
    52,581.38x = 1,036,262,366.54
  5. Step 5: Solve for x
    x = 1,036,262,366.54/52,581.38
  6. Step 6: Final answer
    x = 19,707.78

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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.