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Finding the Fourth Proportional to 68,866.09, 103,077.70 and 35,540.77

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Solution

The fourth proportional to 68,866.09, 103,077.70 and 35,540.77 is: 53,196.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,866.09 : 103,077.70 = 35,540.77 : x
  2. Step 2: Convert to fraction form
    68,866.09/103,077.70 = 35,540.77/x
  3. Step 3: Cross multiply
    68,866.09x = 103,077.70 × 35,540.77
  4. Step 4: Simplify right side
    68,866.09x = 3,663,460,674.55
  5. Step 5: Solve for x
    x = 3,663,460,674.55/68,866.09
  6. Step 6: Final answer
    x = 53,196.87

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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.