Home / 81,983.34-122,965.29-25,821.18

Finding the Fourth Proportional to 81,983.34, 122,965.29 and 25,821.18

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Solution

The fourth proportional to 81,983.34, 122,965.29 and 25,821.18 is: 38,728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,983.34 : 122,965.29 = 25,821.18 : x
  2. Step 2: Convert to fraction form
    81,983.34/122,965.29 = 25,821.18/x
  3. Step 3: Cross multiply
    81,983.34x = 122,965.29 × 25,821.18
  4. Step 4: Simplify right side
    81,983.34x = 3,175,108,886.84
  5. Step 5: Solve for x
    x = 3,175,108,886.84/81,983.34
  6. Step 6: Final answer
    x = 38,728.71

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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.