Home / 85,308.36-117,687.32-49,477.52

Finding the Fourth Proportional to 85,308.36, 117,687.32 and 49,477.52

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Solution

The fourth proportional to 85,308.36, 117,687.32 and 49,477.52 is: 68,256.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.36 : 117,687.32 = 49,477.52 : x
  2. Step 2: Convert to fraction form
    85,308.36/117,687.32 = 49,477.52/x
  3. Step 3: Cross multiply
    85,308.36x = 117,687.32 × 49,477.52
  4. Step 4: Simplify right side
    85,308.36x = 5,822,876,729.05
  5. Step 5: Solve for x
    x = 5,822,876,729.05/85,308.36
  6. Step 6: Final answer
    x = 68,256.81

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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.