Home / 81,234.69-121,851.22-61,633.50

Finding the Fourth Proportional to 81,234.69, 121,851.22 and 61,633.50

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Solution

The fourth proportional to 81,234.69, 121,851.22 and 61,633.50 is: 92,449.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,234.69 : 121,851.22 = 61,633.50 : x
  2. Step 2: Convert to fraction form
    81,234.69/121,851.22 = 61,633.50/x
  3. Step 3: Cross multiply
    81,234.69x = 121,851.22 × 61,633.50
  4. Step 4: Simplify right side
    81,234.69x = 7,510,117,167.87
  5. Step 5: Solve for x
    x = 7,510,117,167.87/81,234.69
  6. Step 6: Final answer
    x = 92,449.63

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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.