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Finding the Fourth Proportional to 81,648.57, 122,403.60 and 37,259.76

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Solution

The fourth proportional to 81,648.57, 122,403.60 and 37,259.76 is: 55,858.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.57 : 122,403.60 = 37,259.76 : x
  2. Step 2: Convert to fraction form
    81,648.57/122,403.60 = 37,259.76/x
  3. Step 3: Cross multiply
    81,648.57x = 122,403.60 × 37,259.76
  4. Step 4: Simplify right side
    81,648.57x = 4,560,728,759.14
  5. Step 5: Solve for x
    x = 4,560,728,759.14/81,648.57
  6. Step 6: Final answer
    x = 55,858.04

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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.