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Finding the Fourth Proportional to 81,785.72, 122,681.01 and 22,625.75

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Solution

The fourth proportional to 81,785.72, 122,681.01 and 22,625.75 is: 33,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,785.72 : 122,681.01 = 22,625.75 : x
  2. Step 2: Convert to fraction form
    81,785.72/122,681.01 = 22,625.75/x
  3. Step 3: Cross multiply
    81,785.72x = 122,681.01 × 22,625.75
  4. Step 4: Simplify right side
    81,785.72x = 2,775,749,862.01
  5. Step 5: Solve for x
    x = 2,775,749,862.01/81,785.72
  6. Step 6: Final answer
    x = 33,939.30

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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.