Home / 81,768.36-112,841.34-49,502.54

Finding the Fourth Proportional to 81,768.36, 112,841.34 and 49,502.54

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Solution

The fourth proportional to 81,768.36, 112,841.34 and 49,502.54 is: 68,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768.36 : 112,841.34 = 49,502.54 : x
  2. Step 2: Convert to fraction form
    81,768.36/112,841.34 = 49,502.54/x
  3. Step 3: Cross multiply
    81,768.36x = 112,841.34 × 49,502.54
  4. Step 4: Simplify right side
    81,768.36x = 5,585,932,947.00
  5. Step 5: Solve for x
    x = 5,585,932,947.00/81,768.36
  6. Step 6: Final answer
    x = 68,314.11

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1.5x scale

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.