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Finding the Fourth Proportional to 68,693.40, 102,990.90 and 26,537.40

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Solution

The fourth proportional to 68,693.40, 102,990.90 and 26,537.40 is: 39,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.40 : 102,990.90 = 26,537.40 : x
  2. Step 2: Convert to fraction form
    68,693.40/102,990.90 = 26,537.40/x
  3. Step 3: Cross multiply
    68,693.40x = 102,990.90 × 26,537.40
  4. Step 4: Simplify right side
    68,693.40x = 2,733,110,709.66
  5. Step 5: Solve for x
    x = 2,733,110,709.66/68,693.40
  6. Step 6: Final answer
    x = 39,787.09

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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.