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Finding the Fourth Proportional to 62,857, 94,265.40 and 20,729.20

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Solution

The fourth proportional to 62,857, 94,265.40 and 20,729.20 is: 31,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,857 : 94,265.40 = 20,729.20 : x
  2. Step 2: Convert to fraction form
    62,857/94,265.40 = 20,729.20/x
  3. Step 3: Cross multiply
    62,857x = 94,265.40 × 20,729.20
  4. Step 4: Simplify right side
    62,857x = 1,954,046,329.68
  5. Step 5: Solve for x
    x = 1,954,046,329.68/62,857
  6. Step 6: Final answer
    x = 31,087.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.