Home / 81,529.22-122,273.31-31,592.18

Finding the Fourth Proportional to 81,529.22, 122,273.31 and 31,592.18

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Solution

The fourth proportional to 81,529.22, 122,273.31 and 31,592.18 is: 47,380.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,529.22 : 122,273.31 = 31,592.18 : x
  2. Step 2: Convert to fraction form
    81,529.22/122,273.31 = 31,592.18/x
  3. Step 3: Cross multiply
    81,529.22x = 122,273.31 × 31,592.18
  4. Step 4: Simplify right side
    81,529.22x = 3,862,880,418.72
  5. Step 5: Solve for x
    x = 3,862,880,418.72/81,529.22
  6. Step 6: Final answer
    x = 47,380.32

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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.