Home / 81,768.40-112,841.36-49,502.56

Finding the Fourth Proportional to 81,768.40, 112,841.36 and 49,502.56

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Solution

The fourth proportional to 81,768.40, 112,841.36 and 49,502.56 is: 68,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768.40 : 112,841.36 = 49,502.56 : x
  2. Step 2: Convert to fraction form
    81,768.40/112,841.36 = 49,502.56/x
  3. Step 3: Cross multiply
    81,768.40x = 112,841.36 × 49,502.56
  4. Step 4: Simplify right side
    81,768.40x = 5,585,936,193.88
  5. Step 5: Solve for x
    x = 5,585,936,193.88/81,768.40
  6. Step 6: Final answer
    x = 68,314.12

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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.