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Finding the Fourth Proportional to 68,340.89, 102,526.36 and 20,962.49

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Solution

The fourth proportional to 68,340.89, 102,526.36 and 20,962.49 is: 31,448.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,340.89 : 102,526.36 = 20,962.49 : x
  2. Step 2: Convert to fraction form
    68,340.89/102,526.36 = 20,962.49/x
  3. Step 3: Cross multiply
    68,340.89x = 102,526.36 × 20,962.49
  4. Step 4: Simplify right side
    68,340.89x = 2,149,207,231.20
  5. Step 5: Solve for x
    x = 2,149,207,231.20/68,340.89
  6. Step 6: Final answer
    x = 31,448.33

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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.