Home / 68,142.48-102,214.62-21,395.36

Finding the Fourth Proportional to 68,142.48, 102,214.62 and 21,395.36

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Solution

The fourth proportional to 68,142.48, 102,214.62 and 21,395.36 is: 32,093.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,142.48 : 102,214.62 = 21,395.36 : x
  2. Step 2: Convert to fraction form
    68,142.48/102,214.62 = 21,395.36/x
  3. Step 3: Cross multiply
    68,142.48x = 102,214.62 × 21,395.36
  4. Step 4: Simplify right side
    68,142.48x = 2,186,918,081.09
  5. Step 5: Solve for x
    x = 2,186,918,081.09/68,142.48
  6. Step 6: Final answer
    x = 32,093.32

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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.