Home / 81,163.19-112,003.05-45,353.49

Finding the Fourth Proportional to 81,163.19, 112,003.05 and 45,353.49

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Solution

The fourth proportional to 81,163.19, 112,003.05 and 45,353.49 is: 62,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,163.19 : 112,003.05 = 45,353.49 : x
  2. Step 2: Convert to fraction form
    81,163.19/112,003.05 = 45,353.49/x
  3. Step 3: Cross multiply
    81,163.19x = 112,003.05 × 45,353.49
  4. Step 4: Simplify right side
    81,163.19x = 5,079,729,143.72
  5. Step 5: Solve for x
    x = 5,079,729,143.72/81,163.19
  6. Step 6: Final answer
    x = 62,586.62

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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.