Home / 81,558.76-122,372.16-31,673.56

Finding the Fourth Proportional to 81,558.76, 122,372.16 and 31,673.56

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Solution

The fourth proportional to 81,558.76, 122,372.16 and 31,673.56 is: 47,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.76 : 122,372.16 = 31,673.56 : x
  2. Step 2: Convert to fraction form
    81,558.76/122,372.16 = 31,673.56/x
  3. Step 3: Cross multiply
    81,558.76x = 122,372.16 × 31,673.56
  4. Step 4: Simplify right side
    81,558.76x = 3,875,961,952.09
  5. Step 5: Solve for x
    x = 3,875,961,952.09/81,558.76
  6. Step 6: Final answer
    x = 47,523.55

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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.