Home / 81,865.74-112,972.28-49,619.44

Finding the Fourth Proportional to 81,865.74, 112,972.28 and 49,619.44

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Solution

The fourth proportional to 81,865.74, 112,972.28 and 49,619.44 is: 68,473.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,865.74 : 112,972.28 = 49,619.44 : x
  2. Step 2: Convert to fraction form
    81,865.74/112,972.28 = 49,619.44/x
  3. Step 3: Cross multiply
    81,865.74x = 112,972.28 × 49,619.44
  4. Step 4: Simplify right side
    81,865.74x = 5,605,621,269.12
  5. Step 5: Solve for x
    x = 5,605,621,269.12/81,865.74
  6. Step 6: Final answer
    x = 68,473.35

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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.