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Finding the Fourth Proportional to 68,306, 94,279.56 and 38,515.28

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Solution

The fourth proportional to 68,306, 94,279.56 and 38,515.28 is: 53,160.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,306 : 94,279.56 = 38,515.28 : x
  2. Step 2: Convert to fraction form
    68,306/94,279.56 = 38,515.28/x
  3. Step 3: Cross multiply
    68,306x = 94,279.56 × 38,515.28
  4. Step 4: Simplify right side
    68,306x = 3,631,203,651.68
  5. Step 5: Solve for x
    x = 3,631,203,651.68/68,306
  6. Step 6: Final answer
    x = 53,160.83

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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.