Home / 81,323.70-121,949.10-36,927.60

Finding the Fourth Proportional to 81,323.70, 121,949.10 and 36,927.60

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Solution

The fourth proportional to 81,323.70, 121,949.10 and 36,927.60 is: 55,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,323.70 : 121,949.10 = 36,927.60 : x
  2. Step 2: Convert to fraction form
    81,323.70/121,949.10 = 36,927.60/x
  3. Step 3: Cross multiply
    81,323.70x = 121,949.10 × 36,927.60
  4. Step 4: Simplify right side
    81,323.70x = 4,503,287,585.16
  5. Step 5: Solve for x
    x = 4,503,287,585.16/81,323.70
  6. Step 6: Final answer
    x = 55,374.85

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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.