Home / 81,233.72-112,115.22-49,412.60

Finding the Fourth Proportional to 81,233.72, 112,115.22 and 49,412.60

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Solution

The fourth proportional to 81,233.72, 112,115.22 and 49,412.60 is: 68,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,233.72 : 112,115.22 = 49,412.60 : x
  2. Step 2: Convert to fraction form
    81,233.72/112,115.22 = 49,412.60/x
  3. Step 3: Cross multiply
    81,233.72x = 112,115.22 × 49,412.60
  4. Step 4: Simplify right side
    81,233.72x = 5,539,904,519.77
  5. Step 5: Solve for x
    x = 5,539,904,519.77/81,233.72
  6. Step 6: Final answer
    x = 68,197.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.