Home / 81,549.05-122,354.70-31,664.16

Finding the Fourth Proportional to 81,549.05, 122,354.70 and 31,664.16

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Solution

The fourth proportional to 81,549.05, 122,354.70 and 31,664.16 is: 47,508.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,549.05 : 122,354.70 = 31,664.16 : x
  2. Step 2: Convert to fraction form
    81,549.05/122,354.70 = 31,664.16/x
  3. Step 3: Cross multiply
    81,549.05x = 122,354.70 × 31,664.16
  4. Step 4: Simplify right side
    81,549.05x = 3,874,258,797.55
  5. Step 5: Solve for x
    x = 3,874,258,797.55/81,549.05
  6. Step 6: Final answer
    x = 47,508.33

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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.