Home / 80,949.61-111,712.44-45,139.27

Finding the Fourth Proportional to 80,949.61, 111,712.44 and 45,139.27

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Solution

The fourth proportional to 80,949.61, 111,712.44 and 45,139.27 is: 62,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,949.61 : 111,712.44 = 45,139.27 : x
  2. Step 2: Convert to fraction form
    80,949.61/111,712.44 = 45,139.27/x
  3. Step 3: Cross multiply
    80,949.61x = 111,712.44 × 45,139.27
  4. Step 4: Simplify right side
    80,949.61x = 5,042,617,991.52
  5. Step 5: Solve for x
    x = 5,042,617,991.52/80,949.61
  6. Step 6: Final answer
    x = 62,293.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.