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Finding the Fourth Proportional to 68,016.24, 101,920.41 and 28,551.69

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Solution

The fourth proportional to 68,016.24, 101,920.41 and 28,551.69 is: 42,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,016.24 : 101,920.41 = 28,551.69 : x
  2. Step 2: Convert to fraction form
    68,016.24/101,920.41 = 28,551.69/x
  3. Step 3: Cross multiply
    68,016.24x = 101,920.41 × 28,551.69
  4. Step 4: Simplify right side
    68,016.24x = 2,909,999,950.99
  5. Step 5: Solve for x
    x = 2,909,999,950.99/68,016.24
  6. Step 6: Final answer
    x = 42,783.90

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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.