Home / 81,880.54-122,842.28-25,718.38

Finding the Fourth Proportional to 81,880.54, 122,842.28 and 25,718.38

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Solution

The fourth proportional to 81,880.54, 122,842.28 and 25,718.38 is: 38,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,880.54 : 122,842.28 = 25,718.38 : x
  2. Step 2: Convert to fraction form
    81,880.54/122,842.28 = 25,718.38/x
  3. Step 3: Cross multiply
    81,880.54x = 122,842.28 × 25,718.38
  4. Step 4: Simplify right side
    81,880.54x = 3,159,304,437.11
  5. Step 5: Solve for x
    x = 3,159,304,437.11/81,880.54
  6. Step 6: Final answer
    x = 38,584.31

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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.