Home / 81,623.72-122,435.40-29,035.28

Finding the Fourth Proportional to 81,623.72, 122,435.40 and 29,035.28

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Solution

The fourth proportional to 81,623.72, 122,435.40 and 29,035.28 is: 43,552.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.72 : 122,435.40 = 29,035.28 : x
  2. Step 2: Convert to fraction form
    81,623.72/122,435.40 = 29,035.28/x
  3. Step 3: Cross multiply
    81,623.72x = 122,435.40 × 29,035.28
  4. Step 4: Simplify right side
    81,623.72x = 3,554,946,120.91
  5. Step 5: Solve for x
    x = 3,554,946,120.91/81,623.72
  6. Step 6: Final answer
    x = 43,552.86

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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.