Home / 68,734.28-103,105.30-21,356.10

Finding the Fourth Proportional to 68,734.28, 103,105.30 and 21,356.10

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Solution

The fourth proportional to 68,734.28, 103,105.30 and 21,356.10 is: 32,035.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,734.28 : 103,105.30 = 21,356.10 : x
  2. Step 2: Convert to fraction form
    68,734.28/103,105.30 = 21,356.10/x
  3. Step 3: Cross multiply
    68,734.28x = 103,105.30 × 21,356.10
  4. Step 4: Simplify right side
    68,734.28x = 2,201,927,097.33
  5. Step 5: Solve for x
    x = 2,201,927,097.33/68,734.28
  6. Step 6: Final answer
    x = 32,035.36

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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.