Home / 81,695.09-112,768.19-49,431.37

Finding the Fourth Proportional to 81,695.09, 112,768.19 and 49,431.37

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Solution

The fourth proportional to 81,695.09, 112,768.19 and 49,431.37 is: 68,232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,695.09 : 112,768.19 = 49,431.37 : x
  2. Step 2: Convert to fraction form
    81,695.09/112,768.19 = 49,431.37/x
  3. Step 3: Cross multiply
    81,695.09x = 112,768.19 × 49,431.37
  4. Step 4: Simplify right side
    81,695.09x = 5,574,286,124.12
  5. Step 5: Solve for x
    x = 5,574,286,124.12/81,695.09
  6. Step 6: Final answer
    x = 68,232.82

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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.