Home / 81,376.31-122,081.88-25,215.17

Finding the Fourth Proportional to 81,376.31, 122,081.88 and 25,215.17

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Solution

The fourth proportional to 81,376.31, 122,081.88 and 25,215.17 is: 37,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,376.31 : 122,081.88 = 25,215.17 : x
  2. Step 2: Convert to fraction form
    81,376.31/122,081.88 = 25,215.17/x
  3. Step 3: Cross multiply
    81,376.31x = 122,081.88 × 25,215.17
  4. Step 4: Simplify right side
    81,376.31x = 3,078,315,358.12
  5. Step 5: Solve for x
    x = 3,078,315,358.12/81,376.31
  6. Step 6: Final answer
    x = 37,828.15

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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.