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Finding the Fourth Proportional to 73,431.38, 101,335.57 and 39,897.38

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Solution

The fourth proportional to 73,431.38, 101,335.57 and 39,897.38 is: 55,058.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,431.38 : 101,335.57 = 39,897.38 : x
  2. Step 2: Convert to fraction form
    73,431.38/101,335.57 = 39,897.38/x
  3. Step 3: Cross multiply
    73,431.38x = 101,335.57 × 39,897.38
  4. Step 4: Simplify right side
    73,431.38x = 4,043,023,137.39
  5. Step 5: Solve for x
    x = 4,043,023,137.39/73,431.38
  6. Step 6: Final answer
    x = 55,058.52

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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.