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Finding the Fourth Proportional to 101,363.54, 139,879.46 and 56,043.43

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Solution

The fourth proportional to 101,363.54, 139,879.46 and 56,043.43 is: 77,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,363.54 : 139,879.46 = 56,043.43 : x
  2. Step 2: Convert to fraction form
    101,363.54/139,879.46 = 56,043.43/x
  3. Step 3: Cross multiply
    101,363.54x = 139,879.46 × 56,043.43
  4. Step 4: Simplify right side
    101,363.54x = 7,839,324,515.36
  5. Step 5: Solve for x
    x = 7,839,324,515.36/101,363.54
  6. Step 6: Final answer
    x = 77,338.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.