Home / 81,324.18-121,969.83-43,877.25

Finding the Fourth Proportional to 81,324.18, 121,969.83 and 43,877.25

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Solution

The fourth proportional to 81,324.18, 121,969.83 and 43,877.25 is: 65,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,324.18 : 121,969.83 = 43,877.25 : x
  2. Step 2: Convert to fraction form
    81,324.18/121,969.83 = 43,877.25/x
  3. Step 3: Cross multiply
    81,324.18x = 121,969.83 × 43,877.25
  4. Step 4: Simplify right side
    81,324.18x = 5,351,700,723.37
  5. Step 5: Solve for x
    x = 5,351,700,723.37/81,324.18
  6. Step 6: Final answer
    x = 65,807.01

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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.