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Finding the Fourth Proportional to 81,893.38, 122,643.22 and 46,726.42

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Solution

The fourth proportional to 81,893.38, 122,643.22 and 46,726.42 is: 69,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,893.38 : 122,643.22 = 46,726.42 : x
  2. Step 2: Convert to fraction form
    81,893.38/122,643.22 = 46,726.42/x
  3. Step 3: Cross multiply
    81,893.38x = 122,643.22 × 46,726.42
  4. Step 4: Simplify right side
    81,893.38x = 5,730,678,607.87
  5. Step 5: Solve for x
    x = 5,730,678,607.87/81,893.38
  6. Step 6: Final answer
    x = 69,977.31

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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.