Home / 81,298.98-121,790.66-59,912.85

Finding the Fourth Proportional to 81,298.98, 121,790.66 and 59,912.85

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Solution

The fourth proportional to 81,298.98, 121,790.66 and 59,912.85 is: 89,752.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,298.98 : 121,790.66 = 59,912.85 : x
  2. Step 2: Convert to fraction form
    81,298.98/121,790.66 = 59,912.85/x
  3. Step 3: Cross multiply
    81,298.98x = 121,790.66 × 59,912.85
  4. Step 4: Simplify right side
    81,298.98x = 7,296,825,244.42
  5. Step 5: Solve for x
    x = 7,296,825,244.42/81,298.98
  6. Step 6: Final answer
    x = 89,752.97

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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.