Home / 83,728.28-115,529.18-51,905

Finding the Fourth Proportional to 83,728.28, 115,529.18 and 51,905

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Solution

The fourth proportional to 83,728.28, 115,529.18 and 51,905 is: 71,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,728.28 : 115,529.18 = 51,905 : x
  2. Step 2: Convert to fraction form
    83,728.28/115,529.18 = 51,905/x
  3. Step 3: Cross multiply
    83,728.28x = 115,529.18 × 51,905
  4. Step 4: Simplify right side
    83,728.28x = 5,996,542,087.90
  5. Step 5: Solve for x
    x = 5,996,542,087.90/83,728.28
  6. Step 6: Final answer
    x = 71,619.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.