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Finding the Fourth Proportional to 68,383.58, 102,565.10 and 21,630.38

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Solution

The fourth proportional to 68,383.58, 102,565.10 and 21,630.38 is: 32,442.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,383.58 : 102,565.10 = 21,630.38 : x
  2. Step 2: Convert to fraction form
    68,383.58/102,565.10 = 21,630.38/x
  3. Step 3: Cross multiply
    68,383.58x = 102,565.10 × 21,630.38
  4. Step 4: Simplify right side
    68,383.58x = 2,218,521,628.99
  5. Step 5: Solve for x
    x = 2,218,521,628.99/68,383.58
  6. Step 6: Final answer
    x = 32,442.32

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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.