Home / 81,229.31-121,863.40-41,148.35

Finding the Fourth Proportional to 81,229.31, 121,863.40 and 41,148.35

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Solution

The fourth proportional to 81,229.31, 121,863.40 and 41,148.35 is: 61,732.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.31 : 121,863.40 = 41,148.35 : x
  2. Step 2: Convert to fraction form
    81,229.31/121,863.40 = 41,148.35/x
  3. Step 3: Cross multiply
    81,229.31x = 121,863.40 × 41,148.35
  4. Step 4: Simplify right side
    81,229.31x = 5,014,477,835.39
  5. Step 5: Solve for x
    x = 5,014,477,835.39/81,229.31
  6. Step 6: Final answer
    x = 61,732.37

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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.