Home / 81,428.42-122,142.75-22,264.61

Finding the Fourth Proportional to 81,428.42, 122,142.75 and 22,264.61

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Solution

The fourth proportional to 81,428.42, 122,142.75 and 22,264.61 is: 33,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.42 : 122,142.75 = 22,264.61 : x
  2. Step 2: Convert to fraction form
    81,428.42/122,142.75 = 22,264.61/x
  3. Step 3: Cross multiply
    81,428.42x = 122,142.75 × 22,264.61
  4. Step 4: Simplify right side
    81,428.42x = 2,719,460,693.08
  5. Step 5: Solve for x
    x = 2,719,460,693.08/81,428.42
  6. Step 6: Final answer
    x = 33,396.95

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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.