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Finding the Fourth Proportional to 68,753.26, 103,130.85 and 19,505.26

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Solution

The fourth proportional to 68,753.26, 103,130.85 and 19,505.26 is: 29,258.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.26 : 103,130.85 = 19,505.26 : x
  2. Step 2: Convert to fraction form
    68,753.26/103,130.85 = 19,505.26/x
  3. Step 3: Cross multiply
    68,753.26x = 103,130.85 × 19,505.26
  4. Step 4: Simplify right side
    68,753.26x = 2,011,594,043.27
  5. Step 5: Solve for x
    x = 2,011,594,043.27/68,753.26
  6. Step 6: Final answer
    x = 29,258.16

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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.