Home / 81,305.10-121,969.13-25,150.13

Finding the Fourth Proportional to 81,305.10, 121,969.13 and 25,150.13

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Solution

The fourth proportional to 81,305.10, 121,969.13 and 25,150.13 is: 37,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,305.10 : 121,969.13 = 25,150.13 : x
  2. Step 2: Convert to fraction form
    81,305.10/121,969.13 = 25,150.13/x
  3. Step 3: Cross multiply
    81,305.10x = 121,969.13 × 25,150.13
  4. Step 4: Simplify right side
    81,305.10x = 3,067,538,739.89
  5. Step 5: Solve for x
    x = 3,067,538,739.89/81,305.10
  6. Step 6: Final answer
    x = 37,728.74

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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.