Home / 68,121.09-102,224.46-36,128.93

Finding the Fourth Proportional to 68,121.09, 102,224.46 and 36,128.93

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Solution

The fourth proportional to 68,121.09, 102,224.46 and 36,128.93 is: 54,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.09 : 102,224.46 = 36,128.93 : x
  2. Step 2: Convert to fraction form
    68,121.09/102,224.46 = 36,128.93/x
  3. Step 3: Cross multiply
    68,121.09x = 102,224.46 × 36,128.93
  4. Step 4: Simplify right side
    68,121.09x = 3,693,259,848.51
  5. Step 5: Solve for x
    x = 3,693,259,848.51/68,121.09
  6. Step 6: Final answer
    x = 54,216.10

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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.