Home / 81,077.58-121,418.73-45,910.62

Finding the Fourth Proportional to 81,077.58, 121,418.73 and 45,910.62

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Solution

The fourth proportional to 81,077.58, 121,418.73 and 45,910.62 is: 68,754.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,077.58 : 121,418.73 = 45,910.62 : x
  2. Step 2: Convert to fraction form
    81,077.58/121,418.73 = 45,910.62/x
  3. Step 3: Cross multiply
    81,077.58x = 121,418.73 × 45,910.62
  4. Step 4: Simplify right side
    81,077.58x = 5,574,409,173.91
  5. Step 5: Solve for x
    x = 5,574,409,173.91/81,077.58
  6. Step 6: Final answer
    x = 68,754.02

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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.