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Finding the Fourth Proportional to 101,284.40, 139,771.68 and 55,965.44

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Solution

The fourth proportional to 101,284.40, 139,771.68 and 55,965.44 is: 77,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,284.40 : 139,771.68 = 55,965.44 : x
  2. Step 2: Convert to fraction form
    101,284.40/139,771.68 = 55,965.44/x
  3. Step 3: Cross multiply
    101,284.40x = 139,771.68 × 55,965.44
  4. Step 4: Simplify right side
    101,284.40x = 7,822,383,570.74
  5. Step 5: Solve for x
    x = 7,822,383,570.74/101,284.40
  6. Step 6: Final answer
    x = 77,231.87

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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.