Home / 81,099.86-121,486.66-40,450.82

Finding the Fourth Proportional to 81,099.86, 121,486.66 and 40,450.82

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Solution

The fourth proportional to 81,099.86, 121,486.66 and 40,450.82 is: 60,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.86 : 121,486.66 = 40,450.82 : x
  2. Step 2: Convert to fraction form
    81,099.86/121,486.66 = 40,450.82/x
  3. Step 3: Cross multiply
    81,099.86x = 121,486.66 × 40,450.82
  4. Step 4: Simplify right side
    81,099.86x = 4,914,234,307.50
  5. Step 5: Solve for x
    x = 4,914,234,307.50/81,099.86
  6. Step 6: Final answer
    x = 60,594.86

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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.