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Finding the Fourth Proportional to 73,431, 101,335.59 and 39,897

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Solution

The fourth proportional to 73,431, 101,335.59 and 39,897 is: 55,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,431 : 101,335.59 = 39,897 : x
  2. Step 2: Convert to fraction form
    73,431/101,335.59 = 39,897/x
  3. Step 3: Cross multiply
    73,431x = 101,335.59 × 39,897
  4. Step 4: Simplify right side
    73,431x = 4,042,986,034.23
  5. Step 5: Solve for x
    x = 4,042,986,034.23/73,431
  6. Step 6: Final answer
    x = 55,058.30

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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.