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Finding the Fourth Proportional to 68,147.67, 102,237.90 and 28,716.06

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Solution

The fourth proportional to 68,147.67, 102,237.90 and 28,716.06 is: 43,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,147.67 : 102,237.90 = 28,716.06 : x
  2. Step 2: Convert to fraction form
    68,147.67/102,237.90 = 28,716.06/x
  3. Step 3: Cross multiply
    68,147.67x = 102,237.90 × 28,716.06
  4. Step 4: Simplify right side
    68,147.67x = 2,935,869,670.67
  5. Step 5: Solve for x
    x = 2,935,869,670.67/68,147.67
  6. Step 6: Final answer
    x = 43,081.00

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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.