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Finding the Fourth Proportional to 101,279.52, 139,763.28 and 55,961.84

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Solution

The fourth proportional to 101,279.52, 139,763.28 and 55,961.84 is: 77,225.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,279.52 : 139,763.28 = 55,961.84 : x
  2. Step 2: Convert to fraction form
    101,279.52/139,763.28 = 55,961.84/x
  3. Step 3: Cross multiply
    101,279.52x = 139,763.28 × 55,961.84
  4. Step 4: Simplify right side
    101,279.52x = 7,821,410,313.24
  5. Step 5: Solve for x
    x = 7,821,410,313.24/101,279.52
  6. Step 6: Final answer
    x = 77,225.98

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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.