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Finding the Fourth Proportional to 68,005.20, 101,908.20 and 60,985.20

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Solution

The fourth proportional to 68,005.20, 101,908.20 and 60,985.20 is: 91,388.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,005.20 : 101,908.20 = 60,985.20 : x
  2. Step 2: Convert to fraction form
    68,005.20/101,908.20 = 60,985.20/x
  3. Step 3: Cross multiply
    68,005.20x = 101,908.20 × 60,985.20
  4. Step 4: Simplify right side
    68,005.20x = 6,214,891,958.64
  5. Step 5: Solve for x
    x = 6,214,891,958.64/68,005.20
  6. Step 6: Final answer
    x = 91,388.48

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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.