Home / 81,497.36-122,216.09-28,175.66

Finding the Fourth Proportional to 81,497.36, 122,216.09 and 28,175.66

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Solution

The fourth proportional to 81,497.36, 122,216.09 and 28,175.66 is: 42,253.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,497.36 : 122,216.09 = 28,175.66 : x
  2. Step 2: Convert to fraction form
    81,497.36/122,216.09 = 28,175.66/x
  3. Step 3: Cross multiply
    81,497.36x = 122,216.09 × 28,175.66
  4. Step 4: Simplify right side
    81,497.36x = 3,443,519,550.67
  5. Step 5: Solve for x
    x = 3,443,519,550.67/81,497.36
  6. Step 6: Final answer
    x = 42,253.14

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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.