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Finding the Fourth Proportional to 68,366.67, 102,402.38 and 66,693.61

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Solution

The fourth proportional to 68,366.67, 102,402.38 and 66,693.61 is: 99,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,366.67 : 102,402.38 = 66,693.61 : x
  2. Step 2: Convert to fraction form
    68,366.67/102,402.38 = 66,693.61/x
  3. Step 3: Cross multiply
    68,366.67x = 102,402.38 × 66,693.61
  4. Step 4: Simplify right side
    68,366.67x = 6,829,584,314.38
  5. Step 5: Solve for x
    x = 6,829,584,314.38/68,366.67
  6. Step 6: Final answer
    x = 99,896.41

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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.