Home / 81,331.54-121,913.79-46,196.18

Finding the Fourth Proportional to 81,331.54, 121,913.79 and 46,196.18

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Solution

The fourth proportional to 81,331.54, 121,913.79 and 46,196.18 is: 69,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.54 : 121,913.79 = 46,196.18 : x
  2. Step 2: Convert to fraction form
    81,331.54/121,913.79 = 46,196.18/x
  3. Step 3: Cross multiply
    81,331.54x = 121,913.79 × 46,196.18
  4. Step 4: Simplify right side
    81,331.54x = 5,631,951,387.32
  5. Step 5: Solve for x
    x = 5,631,951,387.32/81,331.54
  6. Step 6: Final answer
    x = 69,246.83

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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.