Home / 81,721.44-122,582.16-25,560.36

Finding the Fourth Proportional to 81,721.44, 122,582.16 and 25,560.36

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Solution

The fourth proportional to 81,721.44, 122,582.16 and 25,560.36 is: 38,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.44 : 122,582.16 = 25,560.36 : x
  2. Step 2: Convert to fraction form
    81,721.44/122,582.16 = 25,560.36/x
  3. Step 3: Cross multiply
    81,721.44x = 122,582.16 × 25,560.36
  4. Step 4: Simplify right side
    81,721.44x = 3,133,244,139.18
  5. Step 5: Solve for x
    x = 3,133,244,139.18/81,721.44
  6. Step 6: Final answer
    x = 38,340.54

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1.5x scale

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.