Home / 81,721.30-122,579.51-22,560.58

Finding the Fourth Proportional to 81,721.30, 122,579.51 and 22,560.58

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Solution

The fourth proportional to 81,721.30, 122,579.51 and 22,560.58 is: 33,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.30 : 122,579.51 = 22,560.58 : x
  2. Step 2: Convert to fraction form
    81,721.30/122,579.51 = 22,560.58/x
  3. Step 3: Cross multiply
    81,721.30x = 122,579.51 × 22,560.58
  4. Step 4: Simplify right side
    81,721.30x = 2,765,464,841.72
  5. Step 5: Solve for x
    x = 2,765,464,841.72/81,721.30
  6. Step 6: Final answer
    x = 33,840.20

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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.