Home / 81,298.68-121,790.22-59,912.58

Finding the Fourth Proportional to 81,298.68, 121,790.22 and 59,912.58

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Solution

The fourth proportional to 81,298.68, 121,790.22 and 59,912.58 is: 89,752.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,298.68 : 121,790.22 = 59,912.58 : x
  2. Step 2: Convert to fraction form
    81,298.68/121,790.22 = 59,912.58/x
  3. Step 3: Cross multiply
    81,298.68x = 121,790.22 × 59,912.58
  4. Step 4: Simplify right side
    81,298.68x = 7,296,766,298.97
  5. Step 5: Solve for x
    x = 7,296,766,298.97/81,298.68
  6. Step 6: Final answer
    x = 89,752.58

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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.