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Finding the Fourth Proportional to 81,608.58, 122,372.78 and 47,883.22

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Solution

The fourth proportional to 81,608.58, 122,372.78 and 47,883.22 is: 71,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,608.58 : 122,372.78 = 47,883.22 : x
  2. Step 2: Convert to fraction form
    81,608.58/122,372.78 = 47,883.22/x
  3. Step 3: Cross multiply
    81,608.58x = 122,372.78 × 47,883.22
  4. Step 4: Simplify right side
    81,608.58x = 5,859,602,201.40
  5. Step 5: Solve for x
    x = 5,859,602,201.40/81,608.58
  6. Step 6: Final answer
    x = 71,801.30

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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.