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Finding the Fourth Proportional to 68,610.60, 102,620.70 and 61,065.54

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Solution

The fourth proportional to 68,610.60, 102,620.70 and 61,065.54 is: 91,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,610.60 : 102,620.70 = 61,065.54 : x
  2. Step 2: Convert to fraction form
    68,610.60/102,620.70 = 61,065.54/x
  3. Step 3: Cross multiply
    68,610.60x = 102,620.70 × 61,065.54
  4. Step 4: Simplify right side
    68,610.60x = 6,266,588,460.68
  5. Step 5: Solve for x
    x = 6,266,588,460.68/68,610.60
  6. Step 6: Final answer
    x = 91,335.57

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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.