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Finding the Fourth Proportional to 65,897.97, 90,935.60 and 39,042.96

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Solution

The fourth proportional to 65,897.97, 90,935.60 and 39,042.96 is: 53,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,897.97 : 90,935.60 = 39,042.96 : x
  2. Step 2: Convert to fraction form
    65,897.97/90,935.60 = 39,042.96/x
  3. Step 3: Cross multiply
    65,897.97x = 90,935.60 × 39,042.96
  4. Step 4: Simplify right side
    65,897.97x = 3,550,394,717.23
  5. Step 5: Solve for x
    x = 3,550,394,717.23/65,897.97
  6. Step 6: Final answer
    x = 53,877.15

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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.