Home / 81,195.72-112,062.78-49,374.60

Finding the Fourth Proportional to 81,195.72, 112,062.78 and 49,374.60

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Solution

The fourth proportional to 81,195.72, 112,062.78 and 49,374.60 is: 68,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,195.72 : 112,062.78 = 49,374.60 : x
  2. Step 2: Convert to fraction form
    81,195.72/112,062.78 = 49,374.60/x
  3. Step 3: Cross multiply
    81,195.72x = 112,062.78 × 49,374.60
  4. Step 4: Simplify right side
    81,195.72x = 5,533,054,937.39
  5. Step 5: Solve for x
    x = 5,533,054,937.39/81,195.72
  6. Step 6: Final answer
    x = 68,144.66

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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.