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Finding the Fourth Proportional to 68,526.90, 102,845.16 and 66,339.90

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Solution

The fourth proportional to 68,526.90, 102,845.16 and 66,339.90 is: 99,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,526.90 : 102,845.16 = 66,339.90 : x
  2. Step 2: Convert to fraction form
    68,526.90/102,845.16 = 66,339.90/x
  3. Step 3: Cross multiply
    68,526.90x = 102,845.16 × 66,339.90
  4. Step 4: Simplify right side
    68,526.90x = 6,822,737,629.88
  5. Step 5: Solve for x
    x = 6,822,737,629.88/68,526.90
  6. Step 6: Final answer
    x = 99,562.91

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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.