Home / 68,403.36-102,640.56-51,758.43

Finding the Fourth Proportional to 68,403.36, 102,640.56 and 51,758.43

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Solution

The fourth proportional to 68,403.36, 102,640.56 and 51,758.43 is: 77,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,403.36 : 102,640.56 = 51,758.43 : x
  2. Step 2: Convert to fraction form
    68,403.36/102,640.56 = 51,758.43/x
  3. Step 3: Cross multiply
    68,403.36x = 102,640.56 × 51,758.43
  4. Step 4: Simplify right side
    68,403.36x = 5,312,514,239.92
  5. Step 5: Solve for x
    x = 5,312,514,239.92/68,403.36
  6. Step 6: Final answer
    x = 77,664.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.