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Finding the Fourth Proportional to 71,221.33, 98,286.92 and 39,392.38

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Solution

The fourth proportional to 71,221.33, 98,286.92 and 39,392.38 is: 54,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,221.33 : 98,286.92 = 39,392.38 : x
  2. Step 2: Convert to fraction form
    71,221.33/98,286.92 = 39,392.38/x
  3. Step 3: Cross multiply
    71,221.33x = 98,286.92 × 39,392.38
  4. Step 4: Simplify right side
    71,221.33x = 3,871,755,701.67
  5. Step 5: Solve for x
    x = 3,871,755,701.67/71,221.33
  6. Step 6: Final answer
    x = 54,362.31

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1.5x scale

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.