Home / 85,103.71-117,425.32-49,291.58

Finding the Fourth Proportional to 85,103.71, 117,425.32 and 49,291.58

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Solution

The fourth proportional to 85,103.71, 117,425.32 and 49,291.58 is: 68,012.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,103.71 : 117,425.32 = 49,291.58 : x
  2. Step 2: Convert to fraction form
    85,103.71/117,425.32 = 49,291.58/x
  3. Step 3: Cross multiply
    85,103.71x = 117,425.32 × 49,291.58
  4. Step 4: Simplify right side
    85,103.71x = 5,788,079,725.14
  5. Step 5: Solve for x
    x = 5,788,079,725.14/85,103.71
  6. Step 6: Final answer
    x = 68,012.07

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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.