Home / 81,273.36-112,162.26-45,465.78

Finding the Fourth Proportional to 81,273.36, 112,162.26 and 45,465.78

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Solution

The fourth proportional to 81,273.36, 112,162.26 and 45,465.78 is: 62,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,273.36 : 112,162.26 = 45,465.78 : x
  2. Step 2: Convert to fraction form
    81,273.36/112,162.26 = 45,465.78/x
  3. Step 3: Cross multiply
    81,273.36x = 112,162.26 × 45,465.78
  4. Step 4: Simplify right side
    81,273.36x = 5,099,544,637.46
  5. Step 5: Solve for x
    x = 5,099,544,637.46/81,273.36
  6. Step 6: Final answer
    x = 62,745.59

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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.