Home / 81,293.41-111,935.68-71,165.17

Finding the Fourth Proportional to 81,293.41, 111,935.68 and 71,165.17

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Solution

The fourth proportional to 81,293.41, 111,935.68 and 71,165.17 is: 97,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.41 : 111,935.68 = 71,165.17 : x
  2. Step 2: Convert to fraction form
    81,293.41/111,935.68 = 71,165.17/x
  3. Step 3: Cross multiply
    81,293.41x = 111,935.68 × 71,165.17
  4. Step 4: Simplify right side
    81,293.41x = 7,965,921,696.27
  5. Step 5: Solve for x
    x = 7,965,921,696.27/81,293.41
  6. Step 6: Final answer
    x = 97,989.76

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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.