Home / 81,098.06-121,410.39-54,110.48

Finding the Fourth Proportional to 81,098.06, 121,410.39 and 54,110.48

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Solution

The fourth proportional to 81,098.06, 121,410.39 and 54,110.48 is: 81,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,098.06 : 121,410.39 = 54,110.48 : x
  2. Step 2: Convert to fraction form
    81,098.06/121,410.39 = 54,110.48/x
  3. Step 3: Cross multiply
    81,098.06x = 121,410.39 × 54,110.48
  4. Step 4: Simplify right side
    81,098.06x = 6,569,574,758.68
  5. Step 5: Solve for x
    x = 6,569,574,758.68/81,098.06
  6. Step 6: Final answer
    x = 81,007.79

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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.