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Finding the Fourth Proportional to 68,980.62, 95,192.76 and 38,765.28

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Solution

The fourth proportional to 68,980.62, 95,192.76 and 38,765.28 is: 53,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.62 : 95,192.76 = 38,765.28 : x
  2. Step 2: Convert to fraction form
    68,980.62/95,192.76 = 38,765.28/x
  3. Step 3: Cross multiply
    68,980.62x = 95,192.76 × 38,765.28
  4. Step 4: Simplify right side
    68,980.62x = 3,690,173,995.37
  5. Step 5: Solve for x
    x = 3,690,173,995.37/68,980.62
  6. Step 6: Final answer
    x = 53,495.81

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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.