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Finding the Fourth Proportional to 68,731.98, 103,025.97 and 28,773.87

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Solution

The fourth proportional to 68,731.98, 103,025.97 and 28,773.87 is: 43,130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,731.98 : 103,025.97 = 28,773.87 : x
  2. Step 2: Convert to fraction form
    68,731.98/103,025.97 = 28,773.87/x
  3. Step 3: Cross multiply
    68,731.98x = 103,025.97 × 28,773.87
  4. Step 4: Simplify right side
    68,731.98x = 2,964,455,867.40
  5. Step 5: Solve for x
    x = 2,964,455,867.40/68,731.98
  6. Step 6: Final answer
    x = 43,130.66

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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.