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Finding the Fourth Proportional to 101,063.97, 139,460.54 and 55,743.66

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Solution

The fourth proportional to 101,063.97, 139,460.54 and 55,743.66 is: 76,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,063.97 : 139,460.54 = 55,743.66 : x
  2. Step 2: Convert to fraction form
    101,063.97/139,460.54 = 55,743.66/x
  3. Step 3: Cross multiply
    101,063.97x = 139,460.54 × 55,743.66
  4. Step 4: Simplify right side
    101,063.97x = 7,774,040,646.46
  5. Step 5: Solve for x
    x = 7,774,040,646.46/101,063.97
  6. Step 6: Final answer
    x = 76,921.98

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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.